单项选择题

I suppose you are not serious, ______

A．do I
B．don't I
C．are you
D．aren't you
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单项选择题
Beijing is well ______its beautiful scenery and the Great Wall.
A．known as
B．known to
C．known about
D．known for
单项选择题
You two have got a lot______.
A．in general
B．in common
C．in all
D．in any case
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