单项选择题
Only under special circumstances ______ to take make- up tests.
A．are freshmen permitted
B．freshmen are permitted
C．are permitted freshmen
D．permitted are freshmen
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单项选择题
The streets are all wet. It ______ during the night.
A．must be raining
B．must have rained
C．had rained
D．must rain
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单项选择题
The swimming pool was ______ because of the water supply.
A．out of use
B．out of the way
C．out of fashion
D．out of place
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