单项选择题

It is dangerous to ______ out of the window of the train.

A．look
B．lean
C．bend
D．slope
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单项选择题
It is necessary that she ______ to the hospital at once.
A．send
B．was sent
C．have been sent
D．be sent
单项选择题
______ got into the country when it began to rain.
A．Hardly had we
B．Scarcely has we
C．Rarely had we
D．Hardly we had
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