单项选择题

Don’t you think it is time you( )smoking

A．give up
B．gave up
C．would give up
D．should give up
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单项选择题
Air, or( )is called atmosphere, surrounds the whole earth.
A．it
B．that
C．which
D．what
单项选择题
( )was not the way the event happened.
A．Which the press reported
B．That the press reported
C．What did the press report
D．What the press reported
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