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
Television makes us better ______than ever before.
A．inform
B．informing
C．informed
D．to be informed
单项选择题
Life is often compared ______ a stage by many writers.
A．like
B．as
C．with
D．to
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