吉林医药卫生学校 / 英语
13.It`s bad manners to laugh _____ others when they are _____ trouble.
A. with ,on
B. at ,in
C. to, with
D. over ,at
A. with ,on
B. at ,in
C. to, with
D. over ,at
参考答案：
佳题速递：