I. Put the verb in brackets into the correct tense.

1. doesn't rain

2. drinks

3. returns

4. thank

5. speaks

6. is boiling

7. isn't raining

8. is waiting

9. rises - is rising

10. is - is he doing

11. was raining - got

12. was waiting - arrived

13. were you doing

14. Did you go

15. wanted

16. has taught

17. has already been

18. have studied

19. have visited

II. Choose the best option.

1. C. was living

2. B. haven't seen

3. B. left

4. C. has been looking

5. A. am attending

6. D. for ten years

7. A. discovered

8. C. was running

I/

1. doesn't rain

2. drinks

3. returns

4. thank

5. speaks

6. is boiling

7. isn't raining

8. is waiting 

9. rises/ is rising

10. is/ is he doing

11. was raining/ got

12. was waiting/ arrived

13. were you doing

14. Did you go

15. wanted

16. has been teaching/ has taught

17. has already been

18. have studied

19. have visited

II.

1. C (Khi tôi gặp anh ấy lần cuối, anh ấy đang sống ở London)

2. B (Có dấu hiệu nhận biết là since)

3. B (Có dấu hiệu nhận biết là ago)

4. C (Có dấu hiệu nhận biết là since)

5. A (có dấu hiệu nhận biết là now)

6. D

7. A (Có dấu hiệu nhận biết là ago)

8. C (Một hành động đang xảy ra thì hành động khác xen vào)