单项选择题

Cats sleep day and hunt night.

A．in, in
B．at, at
C．during, during
D．by, by

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单项选择题

He was caught ______ in the examination.

A．deceiving
B．cheating
C．tricking
D．swindling

单项选择题

I suppose that they do not have a clear idea who ______ the story.

A．originated
B．generated
C．manufactured
D．estimated

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