单项选择题

These machines have been idle for the past month.

A．been troublesome
B．been working well
C．not been in service
D．not been running at all
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单项选择题
Mr. Carson thought he was entitled to more assistance from the government.
A．had received
B．had a right to
C．would obtain
D．might apply for
单项选择题
The Winfields are a quite conventional family.
A．cheerful
B．humorous
C．ordinary
D．well-known
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