单项选择题

The indoor swimming pool seems to be a great deal more luxurious than ______ .

A．is necessary
B．being necessary
C．to be necessary
D．it is necessary
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单项选择题
______ immediately, she would be able to submit the report before the deadline.
A．Were she acting
B．Were she to act
C．If she acts
D．If she will act
单项选择题
The Clarks haven't decided yet which hotel ______ .
A．to stay
B．is to stay
C．to stay at
D．is for staying
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