Although        very hard, he didn’t pass the exam.
#95176
A
work
B
to work
C
working
D
worked
推荐题目
Her account made all of us ________ .
#96880
A
to confuse
B
confusing
C
confuse
D
confused
It is necessary ___ the magazines in time.
#98663
A
to us to return
B
for us to return
C
to us returning
D
that we had returned
If the car won’t start, _____ it. 
#98015
A
try push
B
try pushing
C
to try pushing
D
to try to push