单项选择题

He didn"t know I was in his office. He was too busy to ______ me.

A．pay attention to
B．notice
C．know
D．realize
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单项选择题
It s really kind ______.
A．of you to say so
B．for you to say so
C．of you saying so
D．for you saying so
单项选择题
______ your homework and make sure that you don t ______ any mistakes.
A．Do; do
B．Make; make
C．Make; do
D．Do; make
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