单项选择题

No sooner had I closed the door than somebody started knocking ________ it.

A．on
B．with
C．to
D．for
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单项选择题
Young ________ he is, he knows what is the right thing to do.
A．that
B．as
C．although
D．however
单项选择题
________ English, she is studying Japanese and French.
A．Except
B．Except for
C．Beside
D．Besides
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