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16. Nam won’t pass the exam .........................he tries hard.
A. if B. unless C. when D. because
17. It is wonderful ………………..the weekend in the countryside.
A. spend B. spending C. to spend D. spent
18. You never drink Coke,…………………………?
A. don’t you B. do you C. did you D. aren’t you
19. Mr. Pike will have appointments from 10:30 am till 11:45, so he will come back home ….............11:45
A. after B. before C. between D. up to
20. The math problem is very difficult, ………………….she can’t find out its answer.
A. so B. because C. if D. however
21. ………………..you stop don’t eating lots of protein, you will gain too much weight.
A. If B. Since C. As D. Unless
22. My math teacher asked me …………I finished my homework and I answered I did.
A. when B. whether C. if D.B&C are correct
23. I saw your school’s advertisement …………today’s edition of the Vietnam News.
A. on B. under C. of D. in
24. “I wish I could visit your village again some day,Ba” “…………………” A. Too true! B. You’re always welcome! C. Yes, let’s ! D. What a lovely day!
25. Mr Bao said , “I am so .....................of having been a Dien Bien Phu soldier.”
A. interested B. excited C. proud D. keen
26. They haven’t seen each other, but they write to each other frequently. They are …………
A. pen pals B. writers C. musicians D. friendship
27. If I attend the course in London, I’ll be able to have a chance to speak to ……… speakers.
A. natural B. native C. formal D. national

Unless you pass this exam,you won't get the scholarship
->if you don't pass this exam, you won't get the scholarship.
-> If you pass this exam, you will get the scholarship.
Bring a raincoat with you,it may rain on your way home
-> It may rain on your way home, so bring a raincoat with you.
-> In case it rains on your way home, bring a raincoat with you.

Viết lại câu:
1.She wass lazy so she failed the exam.
-> If............she hadn't been lzzy , she wouldn't have failed the exam..............
2. If she doesn't work hard, she'll fail the exam.
-> Unless...she works hard , she will fail the exam....................
3.If she learned hard, she would pass the exam.
->were...she to learn hard, she ươuld pass the exam..............
4.If she had know the truth, she would have told me in advance.
-> Had.......she known the truth , she would have told me in advance.....
Viết lại câu:
1.She wass lazy so she failed the exam.
-> If....she hadn't been lazy, he wouldn't have failed the exam......
2. If she doesn't work hard, she'll fail the exam.
-> Unless.......she works hard, she will fail the exam........
3.If she learned hard, she would pass the exam.
->were.....she learned hard, she would pass the exam..........
4.If she had know the truth, she would have told me in advance.
-> Had....she known the truth, she would have told me in advance.........

If you don't try hard , you will not pass your final exam
Unless you try hard, you will not pass your final exam
If you don't try hard , you will not pass your final exam
=> Unless you try hard, you will not pass your final exam.

Complete the second sentences:
1.If she doesn't start working hard now,she won't be able to pass the final exam.
@ Unless.....she start working hard now, she won't be able to pass the exam
2.We are delighted.You passed your English exam.
@We are delighted ....that you passed your English exam

1.He works hard and he will pass the exam
-> If he works hard, he will pass the exam
2.He didn't pass the exam because he didn't work hard
-> If he had worked hard, he would have passed the exam
3. We can avoid waiting by booking the tickets in advance
-> If we book the tickets in advance, we can avoid waiting
4.She didn't hurry, so she missed the train
->Were she to hurry, she wouldn't miss the train
5.They wanted to buy the house, but they hadn't have enough money
-> If they had had enough money, they would have bought the house
6.We must go now or we'll be late
->If we don't go now, we'll be late
7.He was planning to go to the teacher training college but his father died
-> If his father hadn't died, he would have gone to the teacher training college
8.They didn't follow the map,so they got lost
->If they had followed the map, they wouldn't have got lost
9.I'm having a lot of troubles now because I lost my passport last week
->If I hadn't lost my passport last week, I wouldn't have a lot of trouble now
10.If you don't watch the programme,you can't really guide
->Unless you watch the programme,you can't really guide
Rewrite the following sentences
1.He works hard and he will pass the exam
-> If he works hard, he won't pass the exam
2.He didn't pass the exam because he didn't work hard
-> If he had worked hard, he would have passed the exam
3. We can avoid waiting by booking the tickets in advance
-> If we look the tickets in advance, we can avoid waiting
4.She didn't hurry, so she missed the train
->Had she hurried, she wouldn't have missed the train
5.They wanted to buy the house, but they hadn't have enough money
-> If they had got enough money, they would have bought the house
6.We must go now or we'll be late
->If we don't go, we'll be late
7.He was planning to go to the teacher training college but his father died
-> If his father hadn't died, he would have planned to go to teach training college
8.They didn't follow the map,so they got lost
->If they had followed the map, they wouldn't have lost
9.I'm having a lot of troubles now because I lost my passport last week
->If I hadn't lost my passport last week, I wouldn't have a lot of trouble now
10.If you don't watch the programme,you can't really guide
->Unless you watch the programme,you can't really guide

1.he doesn't take any exerciese .he is so unhealthy.
=>if......he took exerciese .he would be healthy.......
2.study hard or you won't pass the exam.
=>if...you study hard, you won't pass the exam.......
3.don't be impatient or you will make mistakes.
=>if.......you don't be impatient ,you will make mistakes........
4.i didn't eat lunch, i feel hungry now
=>if i.......had eaten lunch,I wouldn't feel hungry now.......
5.if you wanted my advice,i wouldn't buy it
=>if i.........were you,i wouldn't buy it.......
6.i only come if they invite me
=>unless.......they invite me,i won't come.........
7.he didn't revise all his lessons, he failed the exam
=>if he..he had revised all his lessons, he wouldn't have failed the exam....
8.leave me alone or i'll call the police
=>unless.....you don't leave me alone ,i'll call the police.......

1, She learn bad by because she neaver does her home work.
-> if she did her homework,she would learn well
2, He is not thirsly, so he doesn't drinle the water.
-> If he were thirsty ,he would drink the water
3, We did not do the exam If he did not do the test will because we did review the lesson careful.
-> If we had reviewed the lesson carefully,we would have passed the exam
4, He world pass the exam If he didn't spend much time playing video games
-> Unless he spent much time playing video games,he would pass the exam
1, She learn bad by because she neaver does her home work.
-> if she did her homework , she would learn well
2, He is not thirsly, so he doesn't drinle the water.
-> If he were thirsty , he would drink the water
3, We did not do the exam If he did not do the test will because we did review the lesson careful.
-> If we had reviewed the lesson carefully , we would have passed the exam
4, He world pass the exam If he didn't spend much time playing video games
-> Unless he spent much time playing video games , he would pass the exam
If he doesn't try hard, John won't pass the entrance exam.