单项选择题

Water, when boiled, always （） steam.

A.gives in
B.gives out
C.gives off
D.gives away

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单项选择题
If you （） that night , you might have been too late to get your ticket.

A．didn't hurry
B．hadn't hurried
C．wouldn't hurry
D．hadn't to hurry
单项选择题
Your experiment reports must be checked with care before （）.

A．handed them in
B．them handing in
C．being handed in
D．handing them in
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