单项选择题

—I'm sorry I can't do it.
—______.

A．Not at all
B．You are welcome
C．It doesn't matter
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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
He is taller than ______ in his class.
A．the other boy
B．other boys
C．the other boys
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