Задайте общие вопросы. дайте краткий ответ. 1. they will buy a computer. 2. he will close the door. 3. she will do her homework. 4. we shall give her the cup. 5. they will take their toys. 6. they will not buy a bike. 7. he will not cook porridge. 8. she will not watch tv. 9. the pupils will not read the text. 10. her parents will not work next saturday. 11. they would like to watch birds. 12. she likes to draw birds. 13. the boys like to read russian books. 14. bob can go to the zoo. 15. bob is at the zoo. 16. they go to the zoo. 17. he goes to the park. 18. ann will meet her teacher tomorrow. 19. the pupils can take their cassettes. 20. the pupil must buy two books.

1) They will buy a computer
    Will they buy a computer?
   Yes, they will .
2. He will close the door
   Will he close the door?
    Yes, he will.
3. She will do her homework
    Will she do her homework?
  Yes, she will.
4. We shall give her the cup
   Shall we give her the cup?
    Yes, we shall.
5. They will take their toys
   Will they take their toys?
  Yes, they will.
6. They will not buy a bike
   Will they buy a bike?
  No, they won't
7. He will not cook porridge
   Will he cook porridge?
   No, he won't
8. She will not watch TV
   Will she watch TV?
   No, she won't
9. The pupils will not read the text
   Will the pupils read the text?
   No, they won't
10. Her parents will not work next Saturday.
     Will her parents work next Saturday?
     No, they won't
11. They would like to watch birds
     Would they like to watch birds?
      Yes, they would
12. She likes to draw birds.
     Does she like to draw dirds?
    Yes, she does
13. The boys like to read Russian books.
      Do the boys like to read Russian books?
      Yes, they do
14. Bob can go to the Zoo.
     Can Bob go to the Zoo?
      Yes, he can
15. Bob is at the Zoo.
     Is Bob at the Zoo?
     Yes, he is
16. They go to the Zoo.
     Do they go to the Zoo?
     Yes, they do
17. He goes to the park.
     Does he go to the park?
     Yes, he does
18. Ann will meet her teacher tomorrow.
     Will Ann meet her teacher tomorrow?
     Yes, she will
19. The pupils can take their cassettes.
       Can the pupils take their cassettes?
      Yes, they can
20. The pupil must buy two books.
     Must the pupils buy two books?
     Yes, they must

По-моему как-то так :)