单项选择题

The farm produced more food than_________ thought possible during World War II.

A．ever be
B．would ever be
C．has ever been
D．had ever been
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单项选择题
The building looks deserted but there‘s _______to be someone on guard there.
A．still
B．simply
C．bound
D．prob
单项选择题
She has to work hard to keep the house_____ and tidy with three small children.
A． smooth
B． neat
C．compact
D．pla
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