1.We shouldn't l______ at those who are in trouble. 2.T_____ they are poor,they are happy.
3.Liu Mei has no i_______ in math at all
4.It's necessary ______(have) a few friends in our life.
5.He doesn't know how _____(use) the camputer.
人气：281 ℃ 时间：2019-11-21 12:59:52
解答
1.We shouldn't laugh__ at those who are in trouble.2.Though_ they are poor,they are happy.
3.Liu Mei has no idea in math at all
4.It's necessary _to have__(have) a few friends in our life.
5.He doesn't know how _to use_(use) the camputer.
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