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5 tháng 12 2018

Rewrite the following sentences using conditional sentence

E.g: Drive carefully or you will cause accidents

-> If you don't drive carefully, you will cause accidents

1. Be quiet or you will wake the baby up

-> If ___you are not quite, you will wake the baby up___

2. Unless she listens carefully, she will make some mistakes

-> If ___ she doesn't listen carefully, she will make some mistakes__

3. If anybody should phone me, please tell them I'm busy

-> Should ___somebody phone me, please tell them I'm busy__

4. If you should find any difficulty in using that laptop, please call me

-> Should ___you find any difficulty in using that laptop, please call me____

5. Make me some coffee and I'll give you one of my biscuis

-> If you __make me some coffee, I'll give you one of my biscuits___

1 tháng 4 2022

Exercise 2. Rewrite the following sentences using conditional sentence type 1 

1. Drive carefully or you will cause accident.

=> If you drive to fast, you may have an accident

2. Be quiet or you’ll wake the baby up

=> If you don’t keep silent, you’ll wake the baby up.

3. I don’t have free time, that’s why I can’t go to see him.

=> If I had free time, I would go to see him

 
Rewrite the following sentences 1. He smokes too much; that's why he can't get rid of his cough.->Were...................... 2.He doesn't take any execises. He is so unhealthy->Were............................. 3.We can't get the ticket because I don't have the right change.->Were..................... 4.Study hard or you won't pass the exam.-> Should......................... 5.Don't be impatient or you will make mistakes.->Should.................. 6.I didn't eat lunch, I feel hungry...
Đọc tiếp

Rewrite the following sentences

1. He smokes too much; that's why he can't get rid of his cough.->Were......................

2.He doesn't take any execises. He is so unhealthy->Were.............................

3.We can't get the ticket because I don't have the right change.->Were.....................

4.Study hard or you won't pass the exam.-> Should.........................

5.Don't be impatient or you will make mistakes.->Should..................

6.I didn't eat lunch, I feel hungry now.->Had.....................

7.I only come if they invite me.->Unless..........

8.He didn't revise all his lesson, he failed the exam.->Had...........................

9. The park is over there, only 5 minutes walk.->If you walk.......................

10.Leave me alone or I'll call the police.->Unless..................

11.The car breaks down so often because you don't take good care of it.->Were you.................

12.He is very bad-tempered, that's why his wife left him soon after marriage.->If........................

13.Don't tell lies to your boss or you'll be fired at once.-Should..............

14.She got married at such an early age: otherwise, she would be at unisersity now.-> Had...........................

0
Rewrite the following sentences 1. He smokes too much; that's why he can't get rid of his cough.->Were...................... 2.He doesn't take any execises. He is so unhealthy->Were............................. 3.We can't get the ticket because I don't have the right change.->Were..................... 4.Study hard or you won't pass the exam.-> Should......................... 5.Don't be impatient or you will make mistakes.->Should.................. 6.I didn't eat lunch, I feel hungry...
Đọc tiếp

Rewrite the following sentences

1. He smokes too much; that's why he can't get rid of his cough.->Were......................

2.He doesn't take any execises. He is so unhealthy->Were.............................

3.We can't get the ticket because I don't have the right change.->Were.....................

4.Study hard or you won't pass the exam.-> Should.........................

5.Don't be impatient or you will make mistakes.->Should..................

6.I didn't eat lunch, I feel hungry now.->Had.....................

7.I only come if they invite me.->Unless..........

8.He didn't revise all his lesson, he failed the exam.->Had...........................

9. The park is over there, only 5 minutes walk.->If you walk.......................

10.Leave me alone or I'll call the police.->Unless..................

11.The car breaks down so often because you don't take good care of it.->Were you.................

12.He is very bad-tempered, that's why his wife left him soon after marriage.->If........................

13.Don't tell lies to your boss or you'll be fired at once.-Should..............

14.She got married at such an early age: otherwise, she would be at unisersity now.-> Had...........................

2
14 tháng 8 2019

Rewrite the following sentences

1. He smokes too much; that's why he can't get rid of his cough.

->Were he not to smoke too much, he could get rid of his cough.

2.He doesn't take any exercises. He is so unhealthy

->Were he to take some exercise, we would be so healthy.

3.We can't get the ticket because I don't have the right change.

->Were I to have the right change, we could get the ticket.

4.Study hard or you won't pass the exam.

-> Should you study hard, you will pass the exam.

5.Don't be impatient or you will make mistakes.

->Should you be impatient, you will make mistakes.

6.I didn't eat lunch, I feel hungry now.

->Had I eaten lunch, I wouldn't feel hungry now.

7.I only come if they invite me.

->Unless they invite me, I won't come.

8.He didn't revise all his lesson, he failed the exam.

->Had he revised all his lesson, he wouldn't have failed the exam.

9. The park is over there, only 5 minutes walk.

->If you walk to the park, it will take you 5 minutes.

10.Leave me alone or I'll call the police.

->Unless you leave me alone, I'll call the police.

11.The car breaks down so often because you don't take good care of it.

->Were you to take good care of the car, it wouldn't break down so often.

12.He is very bad-tempered, that's why his wife left him soon after marriage.

->If he were not very bad-tempered, his wife wouldn't have left him soon after marriage.

13.Don't tell lies to your boss or you'll be fired at once.

->Should you tell lies to your boss, you'll be fired at once.

14.She got married at such an early age: otherwise, she would be at unisersity now.

-> Had she not got married at such an early age, she would have been at unisersity now.

14 tháng 8 2019

1. He smokes too much; that's why he can't get rid of his cough.

-> Were he not to smoke too much, he couldn't get rid of his cough.

2.He doesn't take any execises. He is so unhealthy

-> Were he to take any execises, he wouldn't be so unhealthy.

3.We can't get the ticket because I don't have the right change.

-> Were I to have the right change, we couldn't get the ticket.

4.Study hard or you won't pass the exam.

-> Should you hard study, you will pass the exam.

5.Don't be impatient or you will make mistakes.

-> Should you be impatient, you won't make mistakes.

6.I didn't eat lunch, I feel hungry now.

-> Had I eaten lunch, I wouldn't feel hungry now.

7.I only come if they invite me.

-> Unless they invite me, I won't come.

8.He didn't revise all his lesson, he failed the exam.

-> Had he revised all his lesson, he woulfn't have failed the exam.

9. The park is over there, only 5 minutes walk.

-> If you walk to the park, it will take you only 5 minutes.

10.Leave me alone or I'll call the police.

-> Unless you leave me alone, I'll call the police.

11.The car breaks down so often because you don't take good care of it.

-> Were you to take good care of the car, it wouldn't break down so often.

12.He is very bad-tempered, that's why his wife left him soon after marriage.

-> If he wasn't very bad-tempered, his wife wouldn't have left him soon after marriage.

13.Don't tell lies to your boss or you'll be fired at once.

-> Should you tell lies to your boss, you'll be fired at once.

14.She got married at such an early age: otherwise, she would be at unisersity now.

-> Had she not got married at such an early age, she would be at unisersity now.

help me!!! Choose the correct answer 1,A stop B stopped 5,A will B would 2,A give B gave 6,A live B will live 3,A will eat B ate 7,A will B would 4, A get B would get 8,A will B would Dear Marsha I'm not sure what to do I'm thinking of becoming a vegetable, but some of my friends say it's a bad idea. They say that if I (1)__ eating meat, my body won't get all the things it needs to say healthy. Are my friends right? Thanks, Yuri, age 14 Dear Yuri Millions of people vegetable and...
Đọc tiếp

help me!!!

Choose the correct answer

1,A stop B stopped 5,A will B would

2,A give B gave 6,A live B will live

3,A will eat B ate 7,A will B would

4, A get B would get 8,A will B would

Dear Marsha

I'm not sure what to do I'm thinking of becoming a vegetable, but some of my friends say it's a bad idea. They say that if I (1)__ eating meat, my body won't get all the things it needs to say healthy. Are my friends right?

Thanks,

Yuri, age 14

Dear Yuri

Millions of people vegetable and they're perfectly healthy. You have to be careful, though if you (2)__ up eating meat completely, and only (3)___ chocolate and crips, that would obiviously be very baf for you ! If people don't eat properly, they (4)___ ill.It's that simple.If you eat lots of fruit ad salad and beans, you (5)___ get all the things you need to say healthy.But you're only 14years old. If you (6)___ at home with your parents and you probably do -you'll have to ask them what they think too. If your mum cooks for you , (7) it __ be difficult for her to make you special meals. If I were you, I (8)___ think about this carefully and maybe wait until you're a bit older before making such a big decision.

Marsha

Complete using the correct form of the words in brackets

1, If you ___(tell) me you were going to the beach, I'd have come with you

2, If Dan had missed the plane, he __(be) very annoyed

3, I'd have got you a present if I ___(know) it was your birthday

4,We ___(not/get) lost if we'd taken a map with us

5, If the car ___(not/break down), I wouldn't have been late

6, If you ___(not /hep) me , I wouldn't have finished in time

7, If Baz___(not/show) you what to do, what ___(you/do)?

Complete using the correct form of the words in brackets

1, If you ___ (tell) me you were going to the beach ,I'd have come with you

2,If Dan had missed the plane, he ___(be) very annoyed

3,I'd have got you a present if I ___ (know) it was your birthday

4, We___ (not/get) lost if we'd taken a map with us

5,If the car ____(not/break down), I wouldn't have been late

6, If you ___(not/help) me, I wouln't have finished in time

7, If Baz ___(not/ show) you what to do, what ___(you/do)?

Complete each second so that it has a similar meaning to the first sentences. Write between two and five words

1, It wasn't cold, so we didn't light a fire

If it ___ cold , we'd have lit a fire

2, John didn't come, so we didn't do any thing

If John ___,we'd have done some painting

3, Claire didn't buy any clothes because she didn't see anything she liked

Claire ____some clothes if she'd seen something she liked

4,The audience laughted because the joke was very funny

If the joke ____very funny, the audience wouldn't have laughed

5, We decided to leave because it was really noisy

We ___ to leave if it hadn't been really noisy

6, Sylvia doesn't have enough money, so she can't buy a new computer

If Sylvia_______ enough money, she'd buy a new computer

7, The twins don't see their friends often because they're very busy

If the twins weren't so busy, they____ their friends more often

8, Grandma won't get a dog because she lives in a small flat

If Grandma____in a small flat, she'd get a dog

9, I think you should tell your parents the truth

If I ___ you, I'd tell your parents the truth

1
18 tháng 4 2018

Choose the correct answer

1,A stop B stopped 5,A will B would

2,A give B gave 6,A live B will live

3,A will eat B ate 7,A will B would

4, A will get B would get 8,A will B would

Dear Marsha

I'm not sure what to do I'm thinking of becoming a vegetable, but some of my friends say it's a bad idea. They say that if I (1)_stop_ eating meat, my body won't get all the things it needs to say healthy. Are my friends right?

Thanks,

Yuri, age 14

Dear Yuri

Millions of people vegetable and they're perfectly healthy. You have to be careful, though if you (2)_gave _ up eating meat completely, and only (3)_ate__ chocolate and crips, that would obiviously be very baf for you ! If people don't eat properly, they (4)_will get__ ill.It's that simple.If you eat lots of fruit ad salad and beans, you (5)_will__ get all the things you need to say healthy.But you're only 14years old. If you (6)__live_ at home with your parents and you probably do -you'll have to ask them what they think too. If your mum cooks for you , (7) it _will_ be difficult for her to make you special meals. If I were you, I (8)_would__ think about this carefully and maybe wait until you're a bit older before making such a big decision.

Marsha

Complete using the correct form of the words in brackets

1, If you _had told__(tell) me you were going to the beach, I'd have come with you

2, If Dan had missed the plane, he _would have been_(be) very annoyed

3, I'd have got you a present if I __had known_(know) it was your birthday

4,We _wouldn't have got__(not/get) lost if we'd taken a map with us

5, If the car _hadn't break down__(not/break down), I wouldn't have been late

6, If you _hadn't helped__(not /hep) me , I wouldn't have finished in time

7, If Baz_don't show__(not/show) you what to do, what _will you do__(you/do)?

Complete using the correct form of the words in brackets

1, If you _had told__ (tell) me you were going to the beach ,I'd have come with you

2,If Dan had missed the plane, he _would have been__(be) very annoyed

3,I'd have got you a present if I __had known_ (know) it was your birthday

4, We_wouldn't have got__ (not/get) lost if we'd taken a map with us

5,If the car _hadn't break down___(not/break down), I wouldn't have been late

6, If you __hadn't helped__(not/help) me, I wouln't have finished in time

7, If Baz __don't show__(not/ show) you what to do, what_will you do_(you/do)?

Complete each second so that it has a similar meaning to the first sentences. Write between two and five words

1, It wasn't cold, so we didn't light a fire

If it __had been_ cold , we'd have lit a fire

2, John didn't come, so we didn't do any thing

If John __had come_,we'd have done some painting

3, Claire didn't buy any clothes because she didn't see anything she liked

Claire __would have bought__some clothes if she'd seen something she liked

4,The audience laughted because the joke was very funny

If the joke __hadn't been__very funny, the audience wouldn't have laughed

5, We decided to leave because it was really noisy

We _wouldn't have decided_ to leave if it hadn't been really noisy

6, Sylvia doesn't have enough money, so she can't buy a new computer

If Sylvia____had___ enough money, she'd buy a new computer

7, The twins don't see their friends often because they're very busy

If the twins weren't so busy, they__would see__ their friends more often

8, Grandma won't get a dog because she lives in a small flat

If Grandma_didn't live___in a small flat, she'd get a dog

9, I think you should tell your parents the truth

If I _were__ you, I'd tell your parents the truth

REWRITE THE FOLLOWING SENTENCES USING IF-> UNLESS TYPE1 1. If he doesn't hurry, he will be late for school -> unless 2. unless it stops raining, we won't go out -> if 3. you will get success if you are patient - unless 4. those flowers will die if nobody waters them - unless 5. no one can help him if he doesn't tell the truth - unless 6. you will catch a cold unless you keep your feet dry - if 7. if i don't catch the plane, i will not be home by five - unless 8. if you don't apologize, i will...
Đọc tiếp

REWRITE THE FOLLOWING SENTENCES USING IF-> UNLESS
TYPE1
1. If he doesn't hurry, he will be late for school
-> unless
2. unless it stops raining, we won't go out
-> if
3. you will get success if you are patient
- unless
4. those flowers will die if nobody waters them
- unless
5. no one can help him if he doesn't tell the truth
- unless
6. you will catch a cold unless you keep your feet dry
- if
7. if i don't catch the plane, i will not be home by five
- unless
8. if you don't apologize, i will never speak to you again
-unless
9. unless he gives me his number, i won't phone him
- if
10. he cannot do that exercise if he doesn't learn his lessons carefully
-unless

TYPE 2
1. unless the studied harder, he would fail the final exam
- if
2. unless the drank alcohol, he would pass the contest
- if
3. unless he phoned immediately, he wouldn't meet Mary
-if
4/ if we didn't have a calculator, we couldn't work his more quickly
-unless
5. if i weren't weak, i could walk
- unless
6. if you weren't slow now, you could uiwn the race
- unless
7. if you didn't speak very quickly, the students could hear you well
- unless
8. if tom didn't invite me, i wouldn't go to the party
- unless
9. if they didn;t know his number now, they wouldn't give it to me
- unless
10. unless he were careful, he would have serious accident
- if

TYPE3
1. if he hadn;t been too lazy, he wouldn't have failed the exam
- unless
2. unless yesterday had been a nice day, we wouldn;t have gone camping
-if
3. if you hadn't driven carefully, you would have had a serious accident
- unless
4. if the bus hadn't been crowded, he wouldn't have walked to the office
-unless
5. unless you had studied hard, you wouldn't have walked to the office
- if
6. unless you had helped me, i wouldn't have finished our homework
- if
7. unless the meeting were so long they wouldn't feel tired
- if
8. if he weren't too lazy, he would pass the exam
- unless

5
15 tháng 1 2018

REWRITE THE FOLLOWING SENTENCES USING IF-> UNLESS
TYPE1
1. If he doesn't hurry, he will be late for school
-> unless he hurry, he will be late for school
2. unless it stops raining, we won't go out
-> if it doesn't stop raining, we won't go out
3. you will get success if you are patient
- unless you aren't patient,you will get success
4. those flowers will die if nobody waters them
- unless nobody doesn't water them,those flowers will die
5. no one can help him if he doesn't tell the truth
- unless he tell the truth,no one can help him
6. you will catch a cold unless you keep your feet dry
- if you don't keep your feet dry,you won't catch a cold
7. if i don't catch the plane, i will not be home by five
- unless i catch the plane, i will not be home by five
8. if you don't apologize, i will never speak to you again
-unless you apologize, i will never speak to you again
9. unless he gives me his number, i won't phone him
- if he doesn't give me his number, i won't phone him
10. he cannot do that exercise if he doesn't learn his lessons carefully
-unless he learn his lessons carefully,he can do that exercise

15 tháng 1 2018

TYPE 2
1. unless the studied harder, he would fail the final exam
- if the didn't study harder, he would fail the final exam
2. unless the drank alcohol, he would pass the contest
- if the didn't drink alcohol, he would pass the contest
3. unless he phoned immediately, he wouldn't meet Mary
-if he didn't phone immediately, he wouldn't meet Mary
4/ if we didn't have a calculator, we couldn't work his more quickly
-unless we didn't have a calculator, we couldn't work his more quickly
5. if i weren't weak, i could walk
- unless i were weak, i could walk
6. if you weren't slow now, you could uiwn the race
- unless you were slow now, you could uiwn the race
7. if you didn't speak very quickly, the students could hear you well
- unless you spoke very quickly, the students could hear you well
8. if tom didn't invite me, i wouldn't go to the party
- unless tom invited me, i wouldn't go to the party
9. if they didn;t know his number now, they wouldn't give it to me
- unless they knew his number now, they wouldn't give it to me
10. unless he were careful, he would have serious accident
- if he weren't careful, he would have serious accident

27 tháng 5 2020

1, you have to study hard, or you will fail the next exam.

If...you don't study hard, you will fail the next exam

2, please come before 8 am, otherwise, you can’t meet her.

If...you come before 8 a.m , you can't meet her

3, tell her the truth when you see her tomorrow. If.. you see her tomorrow, tell her the truth

4, you press this button to stop the machine.

-> If you want to stop the machine, you can press this button

5, i hope it is sunny tomorrow because i can go to the beach then.

-> If it is sunny tomorrow, i can go to the beach

6, make me some coffee and i will give you one of my biscuits

.-> If you make me some coffee , i'll give you one of my biscuits

7, in the snowy weather, we don’t go to school.

-> If it is in the snowy weather, we won't go to school

8, i only come if they invite me.

If... they don't invite me, i won't come

9, work hard or you can’t pass the exam.

If... you work hard, you can pass the exam

10, practise speaking every day or you can’t improve your English.

If....you don't practise speaking everyday, you can't improve your English

27 tháng 5 2020

1, you have to study hard, or you will fail the next exam. If you don't study hard, you will fail the next exam. / If you study hard, you won't fail the next exam.

2, please come before 8 am, otherwise, you can’t meet her. If you don't come before 8 am, you can't meet her. / If you come before 8 am, you can meet her.

3, tell her the truth when you see her tomorrow. If you see her tomorrow, tell her the truth

4, you press this button to stop the machine.-> If you press this button, you will stop the machine

5, i hope it is sunny tomorrow because i can go to the beach then.-> If it is sunny tomorrow, I can go to the beach then

6, make me some coffee and i will give you one of my biscuits.-> If you make me some coffee, I will give you one of my biscuits

7, in the snowy weather, we don’t go to school.-> If the weather is snowy, we won't go to school

8, i only come if they invite me. If they invite me, I will come

9, work hard or you can’t pass the exam. If you don't work hard, you can't pass the exam. / If you work hard, you can pass the exam.

10, practise speaking every day or you can’t improve your English. If you don't practise speaking every day, you can’t improve your English. / If you practise speaking every day, you can improve your English.

Có những câu có 2 cách làm, b chọn cách nào cũng đúng nhé.

A.​​ Choose the word or phrase - a, b, c, or d - that best completes the sentence. 21. ​​ What would Tom do if he ......................... the truth? a. would know b. has know c. knows d. knew 22. Jim wanted to know................call and tell him where to meet you. a. you could b. whether you can c. if you could d. when could you 23. Could you​​ talk........................? I'm trying to work. a. more quietly b. quieter than c. more quiet d. quiet 24. Whales and sharks are...
Đọc tiếp

A.​​ Choose the word or phrase - a, b, c, or d - that best completes the sentence.
21. ​​ What would Tom do if he ......................... the truth?
a. would know b. has know c. knows d. knew
22. Jim wanted to know................call and tell him where to meet you.
a. you could b. whether you can c. if you could d. when could you
23. Could you​​ talk........................? I'm trying to work.
a. more quietly b. quieter than c. more quiet d. quiet
24. Whales and sharks are carnivores ....................... means they eat meat.
a. this b. that c. it d. which
25. Would you mind................. me tomorrow?​​
a. call b. calling c. to call d. if you call
26. You....................Mark. You know it's a secret.
a. should tell b. shouldn't tell c. couldn't tell​​ ​​ d. might tell
27. Owls have a strong beak and sharp talons.................mice and other small prey:

a. which used to catch b. used for catching
c. their use is to catch d. they are used for catching
28. We wondered why....................... a tip.
a. to leave b. should we leave​​ c. we should leave d. don't we leave
29. If someone .................... into the store, smile and say, 'May I help you?'
a. comes b. came c. will come d. would come
30. ...............you, I would think twice about that decision. It could be a bad move.
a. f I am b. Should I be c. Were I d. If I had been
31. 'Would you like some cake?';​​ 'No, thanks. If I​​ ​​ cake, I....................fat.'
a. ate/ will get b. ate/ would get
c. mould eat/ could get d. am eating/ will get
32.' What are you doing later this afternoon?' ' Oh, ................. the game finishes, go home, I expect.'
a. if b. in c asec. unless d. when
33. She's been studying​​ hard for the exam, so she.................to pass.
a. should b. ought​​ c. had better d. must
34. If I weren't working for an accounting firm, I​​ ​​ in a bank.
a. work b. will work c. have worked​​ d. would be working
35. 'Why are you so late?' 'I .................... my aunt to the airport. The traffic was terrible
a. could take b. must have taken ​​ c. should take d. had to take

0
EX3. 1. You could make better progress if you... (attend) class regularly 2. If I .... (know) his telephone number, I'd give it to you 3. If he worked more slowly, he... (not make) so many mistakes 4. I shouldn't drink that wine if I... (be) you 5. If someone (give).... you a boat, what you (do)....? 6. If you are kind to me, I (be)... good to you 7. He (come).... if you waited 8. If you (ring) ... the bell, the servant would come 9. It is (not, rain)... a lot, the rice crop wouldn't...
Đọc tiếp

EX3.

1. You could make better progress if you... (attend) class regularly

2. If I .... (know) his telephone number, I'd give it to you

3. If he worked more slowly, he... (not make) so many mistakes

4. I shouldn't drink that wine if I... (be) you

5. If someone (give).... you a boat, what you (do)....?

6. If you are kind to me, I (be)... good to you

7. He (come).... if you waited

8. If you (ring) ... the bell, the servant would come

9. It is (not, rain)... a lot, the rice crop wouldn't grow

10. If today (be) .... Sunday, we wouldn't have to work

EX4:

1. Keep silent or you'll wake the baby up

-> If.......................

2. Stop talking or you won't understand the lesson

-> If................

3. I don't know her number, so I don't ring her up

-> If.....................

4. I don't know the answer, so I can't tell you

->.........................

5. We get lost because we don't have a map

-> If...................

6. Susan felt sick because she ate four cream cakes

->If............................

7. If anyone didn't come, we would phone you at once

-> Unless.................

8. If we had enough rain, we couldn't grow rice

-> Unless......................

1
31 tháng 8 2020

EX3.

1. You could make better progress if you...attended (attend) class regularly

2. If I .knew... (know) his telephone number, I'd give it to you

3. If he worked more slowly, he..wouldn't make. (not make) so many mistakes

4. I shouldn't drink that wine if I.were.. (be) you

5. If someone (give)..gave.. you a boat, what would you (do)...do.?

6. If you are kind to me, I (be).will be.. good to you

7. He (come).would come... if you waited

8. If you (ring) rang..the bell, the servant would come

9. It is (not, rain)... a lot, the rice crop wouldn't grow -> sai đề rồi

10. If today (be) were..Sunday, we wouldn't have to work

EX4:

1. Keep silent or you'll wake the baby up

-> If...you don't keep silent,you'll wake the baby up...........

2. Stop talking or you won't understand the lesson

-> If....you don't stop talking,you won't understand the lesson.......

3. I don't know her number, so I don't ring her up

-> If..I knew her number,I would ring her up...................

4. I don't know the answer, so I can't tell you

->...If I knew the answer,I could tell you......................

5. We get lost because we don't have a map

-> If....we had a map,we wouldn't get lost...............

6. Susan felt sick because she ate four cream cakes

->If...Susan hadn't eaten four cream cakes,she wouldn't have felt sick...........

7. If anyone didn't come, we would phone you at once

-> Unless...anyone came,we would phone you at once..............

8. If we had enough rain, we couldn't grow rice

-> Unless...we had enough rain,we couldn't grow rice.................

(nhưng câu 8 cũng sai đề rồi :))) phải là if we didn't have enough rain,we couldn't grow rice thì đáp án mới như trên)