单项选择题

By the time I left the school, the professor ______ that class for two years.

A．has taught
B．had taught
C．will have taught
D．will teach
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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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