Câu của bạn gần đúng, nhưng cần một chút điều chỉnh. Câu chính xác là:

Fruit is a convenient source of vitamins and energy.

Lý do:

• Bỏ "The" trước "Fruit" vì câu này không cần mạo từ xác định.
• Thay "be" bằng "is" để phù hợp với thì hiện tại đơn.
• Thêm "a" để chỉ một loại đối tượng trong nhóm.

thêm "the" sau từ is nhé bạn!

Ex. 11 :

1. take -> takes

2. never is -> is never

3. waking -> wakes

4. has been -> was

5. will go -> go

6. aren't -> isn't

7. interested on -> interested in

8. as well as -> as soon as

9. keen into -> keen on

10. is -> are

11. telling -> to tell

12. what happened -> what had happened

13. was keen about -> was keen on

14. probably will -> will probably

15. will -> will be

Ex.12 :

1. I'm keen on maths.

2. Unless you listen, you won't follow the teacher's lecture.

3. We are interested in walking in the rain

4. Should you ask me for the car, i will lend it to you.

5. John spends 30 minutes to walk to school.

6. She's fond of playing cards with her children at the weekend.

7. She's interested in taking photos of her children.

8. We don't have any time to prepare the speech.

9. I promise I will phone you next week.

10. I am fond of watching the goldfish in the tank.

11. My mon isn't passionate about preparing meals.

12. He fancies reading comic books.

13. I think not many people are into listening to music in their free time.

14. Should he studies hard, he will pass the exam.

15. If you go out in the rain, you will get wet.

.............

Ex4

1 B

2 A

3 C

4 A

5 C

6 B

7 B

8 D

9 C

10 B

Ex5

1 D

2 A

1 The house has just been cleaned

2 The bike has been repaired by my father

3 The exercises have been done since 6 o'clock

4 The girl has already been seen

5 The flowers have been picked by Daisy

6 The chicken has been raised by Nam for 3 months

7 The book has been read before

8 The room has been decorated since this morning

9 The oranges have been eaten

10 A new car has just been bought by her father

------------------------

1 The thief has been arrested since last week

2 The dogs have been raised for 5 years

3 The student have just been met by me

4 The comedy has been shown here

1. She has just cleaned the house.

   • The house has just been cleaned by her.

2. My father has repaired the bike.

   • The bike has been repaired by my father.

3. They have done the exercises since 6 o'clock.

   • The exercises have been done by them since 6 o'clock.

4. He has already seen the girl.

   • The girl has already been seen by him.

5. Daisy has picked the flowers.

   • The flowers have been picked by Daisy.

6. Nam has raised the chicken for three months.

   • The chicken has been raised by Nam for three months.

7. I have read the book before.

   • The book has been read by me before.

8. She has decorated the room since this morning.

   • The room has been decorated by her since this morning.

9. Someone has eaten the oranges.

   • The oranges have been eaten by someone.

10. Her father has just bought a new car.

    • A new car has just been bought by her father.

1. The thief/ arrest / since last week.

   • The thief has been arrested since last week.

2. The dogs/ raise/ for/ five years.

   • The dogs have been raised for five years.

3. The student/ just/ meet/me.

   • I have just been met by the student.

4. The comedy/ show/here.

   • The comedy show has been shown here.

1. She doesn't eat breakfast, so she feels tired.

If she ate...breakfast, she wouldn't feel tired..............................................................................

2. They don't study for exams, so they fail.

If they.........studied for exams, they wouldn't fail..........................................................

3. He doesn't exercise regularly, so he is not fit.

If he.........exercised regularly, he would be fit.............................................................

4. I don't have a car, so I take the bus.

If I........had a car, .....I wouldn't take the bus......................................................................

5. She doesn't like coffee, so she drinks tea.

If she......liked coffee, she wouldn't drink tea.........................................................................

6. He doesn't practice speaking, so he struggles with English.

If he......practiced speaking, he wouldn't struggle with English.................................................................................

7. We don't go to bed early, so we feel tired in the morning.

If we......went to bed early, we wouldn't feel tired in the morning..........................................................................

8. They don't save money, so they can't afford a vacation.

If they.......saved money, we could afford a vacation.........................................................

9. I don't know the answer, so I can't help you.

 If I.......knew the answer, I could help you................................

10. She doesn't wear a jacket, so she gets cold.

If she...wore a jacket, she wouldn't get cold...........................................................................

11. He doesn't study hard, so he doesn't get good grades.

If he.......studied hard, he would get good grades..............................................................

12. I don't have time to cook, so I eat out.

If I had time to cook, I wouldn't eat out...........................................................

13. They don't visit often, so we feel lonely.

If they.....visited often, we wouldn't feel lonely......................................................................

14. She doesn't pay attention, so she misses important details.

If she.......paid attention, she wouldn't miss important details.................................

15. I don't read books, so I don't learn much.

If I.......read books, I would learn much...................................

16. He doesn't wear glasses, so he can't see well.

If he......wore glasses, he would see well......................................

17. We don't have a garden, so we can't grow vegetables.

If we......had a garden, we could grow vegetables....................................................

18. She doesn't ask questions, so she gets confused.

If she.....asked questions, she wouldn't get confused.......................................................................

19. He doesn't like to swim, so he avoids the pool. .

If he.......liked to swim, he wouldn't avoid the pool..................................................

20. I don't travel much, so I miss out on experiences.

If I.......traveled much, I wouldn't miss out on experiences........................................

1. She doesn't eat breakfast, so she feels tired.

If she ate............breakfast, she would't feel tired.....................................................................

2. They don't study for exams, so they fail.

If they.....studied for exams, they would't fail..............................................................

3. He doesn't exercise regularly, so he is not fit.

If he.......exercised regularly, he would be fit...............................................................

4. I don't have a car, so I take the bus.

If 1..............had a car, I would take the bus.....................................................................

5. She doesn't like coffee, so she drinks tea.

If she.....liked coffee, she would't drink tea..........................................................................

6. He doesn't practice speaking, so he struggles with English.

If he....practiced speaking, he wouldn't struggle with English...................................................................................

7. We don't go to bed early, so we feel tired in the morning.

If we...went to bed early, we wouldn't feel tired in the morning.............................................................................

8. They don't save money, so they can't afford a vacation.

If they.........saved money, they could afford a vacation.......................................................

9. I don't know the answer, so I can't help you.

 If I...knew the answer, I could help you....................................

10. She doesn't wear a jacket, so she gets cold.

If she.......wore a jacket, she wouldn't get cold.......................................................................

1. He doesn't save enough to buy a computer but he'd like to.

It he .....saved enough, he could buy a computer.............................

2. It's cold outside so I'll wear a coat.

If it.......weren't cold outside, I wouldn't wear a coat...........................

3. She doesn't study hard, so she won't pass the exam.

If she  ......studied hard, she would pass the exam...............................

4.I have a lot of work to do, so I can't go out tonight.

If I....didn't have a lot of work to do, I could go out tonight.............................

5. Tom can't swim, so he won't go to the beach.

If Tom...could swim, he would go to the beach...........................................

6. I don't have an umbrella, so I'll get wet in the rain.

lf l ....had an umbrella, I wouldn't get wet in the rain.........................................

7. She's hungry, so she'll eat something.

If she.........weren't hungry, she wouldn't eat anything.....................................

8. I don't know the answer, so I can't help you.

If..........I knew the answer, I could help you................................................

19. The weather is nice, so I'll go for a walk.

If the weather..........weren't nice, I wouldn't go for a walk ...........................

10. He's tired, so he won't go to the party.

If he....weren't tired, he would go to the party.......................................................

Ex4: Use double comparartive to complete these following sentences

1. They are big, they fall fast.

 The ____bigger they are, the faster they fall__________________________________________________

2. It is hot, I feel miserable.

 The _the hotter it is, the more miserable I feel_____________________________________________________

3. I look into your eyes much, I love you much.

 The __the more I look into your eyes, the more I love you____________________________________________________

4. He got old, he became bad-tempered.

 The __older he got, the more bad-tempered he became____________________________________________________

5- He worked hard. He felt very bad.

 The _the harder he worked, the worse he felt_____________________________________________________

6- When we think of the exam, we get more and more excited.

 The __more we think of the exam, the more we get excited____________________________________________________

7- As this road gets busier, it becomes more and more dangerous.

 The busier this road gets, the more dangerous it becomes______________________________________________________

8- When you get near to the Equator, the temperature becomes high.

 The __the nearer you get to the Equator, the higher the temperature becomes ____________________________________________________

9- If she stays in England a long time, her English will be very good.

 The __longer she stays in England, the better her English will be____________________________________________________

10- You write fast, your writing becomes illegible.

 The __faster you write, the more illegible your writing becomes____________________________________________________ 

11. She is mature, she becomes beautiful.

 The ____more mature she is, the more beautiful she becomes__________________________________________________

12. He study much, he becames stupid.

 The ____more he studies, he more stupid he becomes__________________________________________________

13. He drinks much water, he becomes thirsty.

 The __more water he drinks, the thirstier he becomes____________________________________________________

14. He is mature, he becomes intelligent

 The __the more mature he is, the more intelligent he becomes____________________________________________________

15. You speak English much, your English will be good.

 The __the more you speak English, the better your English will be____________________________________________________

16. People save much paper, much wood pulp is preserved

 The __more paper people save, the more wood pulp is preserved___________________________________________________

17. We make much paper, it becomes cheap.

 The _____more paper we make, the cheaper it becomes_________________________________________________

18. Petrol becomes expensive, people drive little.

 The __more expensive Petrol become, the less people drive____________________________________________________

19. You make much money, you spend much.

 The _ more money you make, the more you spend_____________________________________________________

20. You work hard, you will get good results.

 The _harder you work, the better results you will get_____________________________________________________ 

51. will live

52. will have

53. will be

54. will live

55. won't be

56. will be

51 will live

52 will go

53 will be

54 will live

55 won't be

56 will be