单项选择题

I don't think you've heard of him before, ______

A．don't I
B．do I
C．have you
D．haven't you
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单项选择题
In some parks visitors are requested to keep ______ the grass.
A．aside
B．away
C．out
D．off
单项选择题
A new Minister for Agriculture has been ______.
A．determined
B．appointed
C．admitted
D．assumed
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