单项选择题

You ought to take every ______ of improving your English.

A．time
B．thing
C．chance
D．case
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单项选择题
He was very busy yesterday; otherwise he ______ to the meeting.
A．would have come
B．would come
C．could come
D．had come
单项选择题
Sorry I can't answer your question. I know ______ about the subject.
A．a little
B．some
C．little
D．few
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