单项选择题

I've been waiting for him for ______ hour and ______ half.

A．a.../
B．an... a
C．an.../
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单项选择题
It was ______ to find him at home.
A．rare
B．few
C．seldom
单项选择题
How do you make your room ______ so nice
A．looks
B．to look
C．look
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