摘要： Don’t laugh others when you are trouble.
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Don’t laugh ___ others. You should help them when they are in trouble.
A. at B. to C. of
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Don't laugh ________ others．You should help them when they are in trouble．
- A.at
- B.to
- C.of
- D.on
Don't laugh _____ others. You should help them when they are in trouble.
[ ]
A. at
B. to
C. of
查看习题详情和答案>>
B. to
C. of