题目内容
It is impolite to ________ those persons in trouble.
[ ]
A.1augh to
B.1augh with
C.laugh of
D.1augh at
答案:D

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题目内容
It is impolite to ________ those persons in trouble.
A.1augh to
B.1augh with
C.laugh of
D.1augh at