问题 选择题

Living things are dying out quickly. Let’s ask ____ destroying them in the past years.

A.what part people have been playing

B.people have played in

C.what part people have played in

D.people have been playing what part

答案

C                       

宾语从句中要用陈述句的语序。  

单项选择题
问答题 简答题