A)

1. played

2. watched

3. walked

4. listened

5. waited

6. checked

7. asked

8. wanted

9. failed

10. delivered

11. decided

12. worked

13. warned

14. washed

15. tried

16. turned

17. questioned

18. obversed

19. needed

20. lived

21. laughed

22. killed

23. kissed

24. invited

B)

1. Yes, I did./ No, I didn't.

2. Yes, he did/ No, he didn't.

3. Yes, she did/ No, she didn't.

4. Yes, she did/ No, she didn't.

5. Yes, it did/ No, it didn't.

C)

1. visited

2. listened

3. studied/ answered

4. Did you finish/ didn't

5. waited/ didn't come

6. asked

7. Did you invite

8. knocked/ didn't open

9. walked

10. happened

11. checked

12. delivered

13. lived

14. didn't study/ failed

D)

1. ... didn't play tennis this weekend.

2. David didn't wash his car on Saturday.

3. Did she finish her homework?

4. The students didn't answer the questions.

5. Marta didn't wait for the bus.

6. Did Elisa call Sue to go out?

7. Did John watch TV all the day?

8. Did Alex wash the dishes?

9. Dorothy didn't invite me to her birthday party.

10. Did Julia clean the entire house this morning?