单项选择题

It ______ our teacher came that we began the examination.

A．was until
B．is until
C．was not until
D．is not until
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单项选择题
______ from his expression, he is in low spirits.
A．Judged
B．Judging
C．Being judged
D．Having judged
单项选择题
Many scientists ______ their own eyes and ears than the theories of the ancients.
A．would rather to believe
B．would rather believe
C．rather would believe
D．will rather believe
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