单项选择题

John played basketball in college and ______ active ever since.

A．have extremely been
B．has been extremely
C．will be extremely
D．should extremely be
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单项选择题
The instructions on how to use the new machine ______ that nobody seemed to be able to understand.
A．were very simplistic
B．was very confused
C．were so confusing
D． was so simplistic
单项选择题
The secretary didn't know who he was, or she ______ him more politely.
A．will be treating
B．would have treated
C．was treating
D．would have been treated
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