单项选择题

She ____________ Mr. Brown yesterday morning, for he has gone to New Jersey on business.

A．mustn't have met
B．couldn't have met
C．shouldn't have met
D．needn't have met
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单项选择题
The project will have to be given up _______________ the government agrees to invest enough money.
A．unless
B．if
C．so that
D．until
单项选择题
Let's go on a picnic this weekend,___________________
A．will we
B．shall we
C．would we
D．should we
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