单项选择题

It is time that we _____________ computers to the productions of iron and steel.

A．applied
B．will apply
C．have applied
D．would have applied
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单项选择题
If your neighbors are too noisy then you have cause for _____________.
A．annoyances
B．complaints
C．moans
D．remarks
单项选择题
_____________ in his life, he became the proud owner of a bed which had springs and a mattress.
A．For the first time
B．From time to time
C．For the time being
D．All the time
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