单项选择题

It's impossible for a child to do so much work within a short period of time, ______

A. isn't it

B. is it
C. has it

D. hasn't it

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单项选择题

—Will you be able to finish the job this week —______.

A. I can't say it

B. I don't know that
C. I'm not sure this

D. I don't expect so

单项选择题

With the shining water before you and the wind, ______ trees behind you, you can not help ______.

A. blown
hut feel relaxed

B. blowing
feeling relaxed
C. blown
but feel relaxing
D. blowing
but feel relaxing

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