单项选择题

One day while I ______ along the street, I ______ someone calling.

A．walked ;was hearing
B．was walking; has heard
C．was walking; heard
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单项选择题
You've given ______ money to Sandy than to me.
A．many more
B．much more
C．a lot of
单项选择题
We had better ______ with him.
A．go
B．went
C．to go
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