单项选择题

As I ______ down the street, I noticed a police car parking at the corner.

A．walked
B．would walk
C．had walked
D．was walking
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单项选择题
I ______ something about him, but I do not know much.
A．told
B．have been told
C．had been told
D．have told
单项选择题
She is ______ kind a gift that all of us like to make friends with her.
A．such
B．so
C．that
D．what
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