题目内容
( ) 20. It is wrong to laugh people when they are trouble.
A. at,in B. over,in C. with,on D. of,in
20. A laugh at sb.意为"嘲笑某人"，be in trouble为固定词组，意为"陷人困境,有困难"。
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题目内容
( ) 20. It is wrong to laugh people when they are trouble.
A. at,in B. over,in C. with,on D. of,in
20. A laugh at sb.意为"嘲笑某人"，be in trouble为固定词组，意为"陷人困境,有困难"。