They have been in love with each other _________they were young

16. They have been in love with each other _________they were young.
A. since B. while. C. until D. all are correct
17. The room ____________ when I arrived .
A. was being cleaned B. is cleaned C. was cleaning D. was cleaned
18. Since I came here, I___________a lot of acquaintances.
A. have had B. had C. have D. am having
19.We___________that film two years ago.
A.watch B.have watched C.had watched D.watched
20.I was learning math when _______________.
A. my mother comes back B. my mother came back
C. my mother has come back D. my mother is coming back
21. Look! The boy ___________ at the desk is Mary‘s boyfriend.
A. stand B. standing C. stands D. stood
22. By September John __________enough to buy a mountain bike
A. saves B. will have saved C. will be saving D. has saved
23. He felt asleep while he ____________ his homework
A. was doing B. had done C. did D. has done
24. After my sister ____________ her clothes, she began watching T.V
A. had washed B. has washed C. was washing D. washes
25. Water _______ of hydrogen and oxygen .
A. consist B. consists C. consisted D. have consisted
26. Please don‘t make so much noise! I ___________
A. have studied B. study C. studied D. am studying
27. She ____________ to me since last year.
A. has not written B. wrote C. writes D. had not written
28. When the police ________ , the thief _________.
A. watched B. was watching C. had watched D. was watched
30. By 2050, medical technology _________ many diseases.
A. will have conquered B. conquered
C. has conquered D. is conquering
31. By the time I left the room, I___________ he lights.
A.will turn off B.would turn off C.have turned off D.had turned off
32. Our teacher came in when we____________ noisy.
A.have been talking B.were talking C.are talking D.had talked
33. Hurry up! It‘s time we __________for next week‘s examination.
A. have studied B. studied C. had studied D. will study
34. When Jack __________me, I __________a letter.
A. phoned/ has been writing B. has phoned/ was writing
C. phoned/ was writing D. was phoning/ wrote
35. Be quiet! The baby__________.
A. is sleeping B. slept C. was sleeping D. sleeps
36. At present Mary _________her clothes. She _________ the clothes on Sundays.
A. is washing / often washes B. has washed / is often washing
C. was washing / has often washed D. washes / often washed
37. After Mary _________ her degree, she intends to work in her father‘s company.
A. will finish B. is finishing C. finishes D. will have finished
38. By the time I ______back next year, I think, you _____ me.
A. am / will have forgotten B. will be / will have forgotten
C. am / will be forgetting D. will be/ will forget
39. Since I moved in, my upstairs neighbor _______ his stereo loudly every night.
A. is playing B. played C. has played D. plays
40. This time last week I _________ to Dalat.
A. have driven B. drove C. was driving D. were driving
41. This is the first time I _________London.
A. have ever visited B. ever visited
C. was ever visiting D. has ever visited
42. Much progress on computers________ since 1950.
A. has made B. has been made C. have made D. have been made
43. This is the first time I________ here.
A. am B. have been C. was D. will be
44. After she________ the letter, she put it down and started to cry.
A. read B. reads C. has read D. had read
45. We __________ each other since we left university.
A. don't meet B. are meeting C. will not meet D. have not met