— Why do you do volunteer work in the North-West?— I_______ to improve the lives of the children there through my efforts. 
#105303
A
was trying
B
have tried
C
am trying
D
tried
推荐题目
let’s go out now. It _____ any more. 
#105337
A
didn’t rain
B
doesn’t rain
C
won’t rain
D
isn’t raining
How happy we are! The holiday we have been looking forward ________at last.
#105324
A
to has come
B
to have come
C
to having come
D
has come