41: The benefits program __________ in the next few months. A. had changed B. were changed C. changed D. will be changed 42: The assistant to Ms. Brigham __________ more responsible in the last year. A. is becoming B. has become C. will become D. becomes 43: If everyone _________, how would we control the traffic? A. could fly B. can fly C. flies D. had flown 44: We _________ with a swim in the lake. A. gave in B. cooled off C. got out D. took up 45: He was ___________ speaker! A. so good a B. so a good C. how good a D. what a good 46: Go __________ this road and then turn left. A. on B. at C. down D. over 47: This is the first time I __________ the experiment on plant breeding. A. do B. would do C. did D. have done 48: ‘Please, will you just tidy your room, and stop _______ excuses!’ A. making B. doing C. having D. taking 49: You ________ finish your homework now. You can always do it after dinner. A. couldn’t B. mustn’t C. don’t have to D. shouldn’t 50: Sometimes Tim wonders __________ when he has too many things to do. A. what to do B. where to start C. when to do D. why to start Nhanh lên nhé, 2p thôi