Definition: in order to make someone look stupid Level: C2
他们总是拿我开玩笑来取乐。
They always make jokes ___at ___my ___expense for entertainment.
因为他超重，同事们经常开他的玩笑。
Because he was overweight, his colleagues often made jokes ___at ___his ___expense.
在会议上，他开了新员工的玩笑，让大家都笑了。
During the meeting, he made a joke ___at the new employee's ___expense, making everyone laugh.
