单项选择题

"This invention is so great." " ______."

A．So is it
B．So it is
C．Nor is mine
D．Nor is it
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单项选择题
Some people get used ______ and it is hard for them to stop.
A．to smoke
B．to smoking
C．smoking
D．for smoking
单项选择题
Weather ______, we'll have an outing tomorrow.
A．permits
B．permitted
C．permitting
D．permit
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