__ is really hard __ them to climb Mount Tai.
#69186
A
This, to
B
It, to
C
This, for
D
It, for
推荐题目
— He hardly spent any time on his subjects, _________?—_________, so he did badly in his lessons.
#68530
A
didn’t he; Yes
B
did he; Yes
C
didn’t he; No
D
did he; No
—They started working on the show two months ago, didn’t they?—___________. A lot of work needed to be finished before the show.
#69888
A
Yes, they did
B
No, they didn’t
C
Yes, they didn’t
D
No, they did
The money is used to ________ poor people and to support development projects.
#70770
A
help
B
helping
C
helped
D
helps
We don’t know ________ it next. Let’s go and ask Mr. Li.
#71165
A
what to do
B
to do what
C
whether to do
D
to do whether