Question

It is not polite to      those persons in trouble.

A．laugh to

B．laugh with

C．laugh of

D．laugh at

Answer 1

D               

             
试题分析：考查动词短语。句意：嘲笑那些处在困境中的人是不礼貌的。It be adj to do sth,这个句型中it 是形式主语，to do sth 才是真正的主语。Laugh at 嘲笑某人。所以选D项。