19. While she ______ TV in the sitting room , the bell ______ .

A. watches … rings　　　　　　 　　　　　　　 B. is watching … rang

C. was watching … rang　　　 　　　　 D. watched … was ringing

18. Mark ________ while he ________ up and down.

A. falls...is jumping 　　　　 　　　　　　 B. fell...was jumping

C. was falling...was jumping　　 　　　　 D. felt...was jumping

17. The student ______ to move the bag of rice _______ he heard the sound of a motorbike .

A. was running... when　　　 　　　　　　 B. was running ... while

C. runs ... when　　　　　 　　　　　　　　　　 D. ran ... while

16. One day when I _______ the post office , I _____ my uncle .

A. pass... say　　　　　　　 　　　　　　 B. was passing ... saw

C. passed ... was seeing　　　 　　　　　 D. am passing ... am seeing

15. I ____ an old friend of mine when I ______ in the street yesterday afternoon .

A. met... was walking　　　　　　 　　 B. was meeting ... walked

C. was meeting ... was walking　　 　 D. met ... walked

14. The Reads _______ lunch when I got to their house .

A . were having　 　　　　　　　 B. was having　 　　 C. are having　 　　 D. is having

13. She _____ the room when I went to see her .

A. doesn’t clean　 　　　　　　　　　　　　　　 B. isn’t cleaning　

C. didn’t cleaning　 　　　　　　　　　　　　　　 D. wasn’t cleaning

12. She_________ apples in her garden when I_________ to see her yesterday.

A. picked，went　　　　　　　　　 B. was picking， went

C. picked，was going　　　　　　　 D. was picking，was going

11. A： How did the accident happen ?

B： You know , it ______ difficult to see the road clearly because it _____ .

A. was … was raining　　　　　　 B. is … has rained

C. is … is raining　　　　　　　　　 D. will be … will rain

10. He asked _______ outside .

A. who are singing　　　　　　　　　　　　　　 B. who was singing　

C. who singing was　　　　　　　　　　　　　　　　　 D. who is singing