40. So far a lot of man-made satellites ______ into space.
A. are being sent up B. have being sent up C. have sent up D. have been sent up
39. Don’t worry. She can take care of the old woman ______.
A. careful enough B. carefully enough C. enough careful D. enough carefully
38. We haven’t finished our class work, ______?
A. have we B. haven’t we C. don’t we D. do we
37. ______ is dangerous to play in the street.
A. This B That C. It D. He
36. Hurry up! It’s time to go. OK. _____.
A. I’m coming B. I’ll come C. I’ve come D. I come
35. The student didn’t go to bed ______ eleven o’clock.
A. before B. until C. after D. when
34. The dictionary ______ me fifteen dollars.
A. cost B. paid C. took D. spent
33. ______ the radio. The baby is sleeping.
A. Turn on B. Turn off C. Turn down D. Turn up
32. It’s raining ______, they have to stay at home.
A. hardly B. badly C. heavily D. loudly
31. ______ have you been to Beijing? Twice.
A. How long B. How soon C. How many times D. How much