单项选择题

If you don' t ______ smoking you will not get better.

A．give off
B．give up
C．give in
D．give out
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单项选择题
Tom found ______ very hard to get high marks.
A．it
B．this
C．that
D．which
单项选择题
I' ve heard him ______ about you often.
A．spoke
B．speaks
C．speak
D．speaking
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