科目： 来源：czyy 题型：
| Scientists will have to _____ new ways to solve the water problem. |
A. catch up with B. keep up with C. come up with D. make up with |
科目： 来源：czyy 题型：
| It gives advice _____ what to do in lots of situations. |
A. about B. in C. of D. on |
科目： 来源：czyy 题型：
| The doctor _____ the man and found nothing serious with him. |
A. looked after B. looked for C. looked at D. looked over |
科目： 来源：czyy 题型：
| The students of Class l got together to _____ the classroom. |
A. clean B. clean up C. cleaning D. cleaned |
科目： 来源：czyy 题型：
| I would rather _____ than _____. |
A. go out; stay at home B. going out; stay at home C. to go out; to stay at home D. to go out; staying at home |
科目： 来源：czyy 题型：
| If I _____ you, I would wear a red skirt at the party. |
A. was B. am C. were D. will be |
科目： 来源：czyy 题型：
| I think I ate _____ at lunchtime. |
A. something well B. something bad C. bad something D. good |
科目： 来源：czyy 题型：
| We need one ping-pang ball and two ______. |
A. ping-pongs bats B. ping-pongs bat C. ping-pong bats |
科目： 来源：czyy 题型：
| —How many lessons do you usually have a day? —Six lessons a day, and each of them _____ 45 minutes. |
A. last B. lasts C. have |
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