— 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
Though the medicine for my disease______, I should often______ at home or in the open air.
#105327
A
works out; work out
B
is working; work out
C
is working out; work
D
works; work
I'll go to the library as soon as I finish what I ________.
#105315
A
was doing
B
am doing
C
have done
D
had been doing