難度：★ 考點：情態動詞
1. _____exercise you take, _____you'll be.
A. The fewer, the fatter B. The less, the fatter C. The less, the more fatter
2. Lisa is a little poor at Chinese. I think she needs_____it every day.
A. practise to speak B. to practise speaking C. practise speaking
3. -Is that your teacher?
-That_____be Mr.Wang. He has gone to Japan with his wife.
A. can't B. mustn't C. may not
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