问题

— Why do you do volunteer work in the North-West?— I_______ to improve the lives of the children there through my efforts.

A:was trying
B:have tried
C:am trying
D:tried

正确答案是：

同类题型

Her best friend likes to do _______ same things ______ she does.

Mr. Green requires that the students ____ cheat in any exam. [ ]

policy formulated, _____.

My mother has had the clothes _______already．

－Ithink teenagers should not be allowed to get car licenses.－Iagree. They are not _______.