单项选择题

We shall start at seven if it __ by that time.

A．will stop raining
B．has stopped raining
C．will have stopped to rain
D．stop to rain
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单项选择题
Not till he got home ______ that he had lost his keys.
A．he realized
B．did he realize
C． realized he
D．he did realize
单项选择题
Like the old, __ respected in our country.
A．the female are
B．the female is
C．a female is
D． female is
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