单项选择题

I have learned English ______ 5 years.

A．in
B．since
C．for
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单项选择题
______! May I borrow your bike
A．Excuse me
B．I"m sorry
C．Let me say
单项选择题
—Can you come here again next Sunday evening—Sorry, I ______ .
A．can"t
B．may not
C．mustn"t
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