题目列表(包括答案和解析)
19. He found ________ very difficult ___________ the math problem.
A. that; to solve B. this; solving C. himself; solve D. it; to solve
18. Gilbert __________ electricity, but Edison ________ the light bulb.
A. discovered; created B. invented; discovered
C. found; created D. discovered; invented
17. In his free time, he often teaches me how __________.
A. swim B. swimming C. to swim D. swims
16. Look around while ___________ the street.
A. cross B. crossing C. crossed D. to cross
15. Sam, you hair is too long and it looks dirty. You’d better ________ it _______.
A. have, to cut B. get, cutting C. have, cut D. get, cutted
14. She worked so quietly _________ no one knew she was there.
A. which B. after C. as D. that
13. –---Is your stomachache getting __________? ----No, it’s worse.
A. better B. bad C. less D. well
12. Daniel plays chess __________, if not better than, David.
A. as well B. as well as C. so well D. so well as
11. The World Wide Wed is sometimes jokingly called the World Wide Wait because it __________ be very slow.
A. should B. must C. will D. can
10. The boy was often seen __________ on the sports ground.
A. to play B. play C. played D. to playing
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