—Haveyoureturnedthebooktotheli

—Have you returned the book to the library ____?
—Yes， I have ____ returned it.

A．yet， ever	B．ever， already
C．already， yet	D．yet， already

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A．has happened to	B．is happened to
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A．used to	B．prefer to
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—Wait a minute．Let me _______ in the schedule (时刻表)．

A．look at it	B．look for it
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