问题
选择题
It is impolite _____ the people when they are in trouble. [ ]
A. to laugh to
B. to laugh at
C. laughing at
D. laughing to
答案
答案：B
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It is impolite _____ the people when they are in trouble. [ ]
A. to laugh to
B. to laugh at
C. laughing at
D. laughing to
答案：B
