题目内容
We _________ in this school for about two years .
A. study B. studied C. have studied
【答案】
C
【解析】略
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We _____ in this pool when we were young, but now it _____ fish.
| A．are used to swim; used to keep |
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| C．used to swimming; is used to keep |
| D．used to swim; is used for keeping |