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单项选择题

Not only the switches but also the old wiring ______ changed.

A．have
B．are
C．have been
D．has been

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热门试题

单项选择题______had he arrived home titan it began to rain.

A．Not until
B．No sooner
C．Scarcely
D．hardly

单项选择题I prefer writing a term paper ________ taking an examination.

A．than
B．to
C．for
D．rather than