单项选择题

______ you were busy, I wouldn"t have bothered you with my questions.

A．If I realized
B．Had I realized
C．Did I have realized that
D．As I realized
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单项选择题
It was ______ of you not to play the piano while I was sleeping.
A．considerable
B．considered
C．considerate
D．considering
单项选择题
Each term our professors would ______ a list of books for us to read.
A．hand in
B．give away
C．pass out
D．write out
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