Question

This is an unpleasant subject __________ we might argue for a long while.?

A．in which	B．with them
C．about which	D．with it?

Answer 1

C?

此题考查带介词的定语从句。做此题要抓准两点:一是先行词是subject；二是定语从句中的谓语动词argue是不及物动词。