— 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
—Why don't we choose that road to save time?—The bridge to it ________.
#105308
A
has repaired
B
is repaired
C
is being repaired
D
will be repaired
— ________ for the glass! —It’s OK. I’m wearing shoes. 
#105336
A
Look out
B
Walk out
C
Go out
D
get out
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
—What's that noise?—Oh,I forgot to tell you.The new machine ________.
#105313
A
was tested
B
will be tested
C
is being tested
D
has been tested