题目内容
It's bad manners to laugh ______ people when they are ______ trouble.
[ ]
A. over, in B. at, in C. in, at D. at, for
答案:B
练习册系列答案
相关题目
题目内容
It's bad manners to laugh ______ people when they are ______ trouble.
[ ]
A. over, in B. at, in C. in, at D. at, for