单项选择题

You could have done much better yesterday. Why( )

A．didn’t you
B．couldn’t you
C．hadn’t you
D．shouldn’t you
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单项选择题
Tele vision makes us better( )than ever before.
A．inform
B．informing
C．informed
D．to be informed
单项选择题
The doctor advised that Mr. Malan( )an operation right away so as to save his life.
A．had
B．would have
C．have
D．was going to have
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