__ 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
--- She’s already been back to Wuxi, ________?--- ________. She is on a visit to Shanghai.
#69692
A
isn’t she; No
B
hasn’t she; Yes
C
isn’t she; Yes
D
hasn’t she; No
---- ________ did you _________ your old newspapers?---- I sold them.
#70019
A
What; deal with
B
How; do with
C
How; deal with
D
When; do with
There used ______ a fishing village.
#69920
A
to have
B
to be
C
to having
D
to being
--He forgot my birthday, didn’t he? --       . He wanted to give you a big surprise.
#69724
A
Yes, he didn’t
B
No, he did
C
Yes, he did
D
No, he didn’t
English is very useful ,____it?
#68527
A
doesn’t
B
isn’t
C
can’t
D
won’t