Do you know we have much difficulty ____ the work on time.. 
#97766
A
on finishing
B
finishing
C
to finish
D
at finishing
推荐题目
_____from the top of the mountain, the citizens find ____ the city is not _____it used to be.
#97624
A
Seen, that, what
B
See, what, that
C
To see, what, that
D
Seeing, that, what
-What has made him in such a low mood recently?—_________ by his father for not passing the exam.
#90707
A
Being criticized
B
Criticized
C
Having criticized
D
To criticize
He studied hard, _____ the exam.
#93065
A
aim at passing
B
aiming passing
C
aiming at passing
D
aim to pass