单项选择题

The students are ______ the mid-term test, which will soon be held.

A．preparing
B．preparing for
C．preparing on
D．preparing in
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单项选择题
The old in the country ______ taken good care of.
A．have
B．has
C．is
D．are
单项选择题
Silk ______ soft and smooth.
A．touches
B．feels
C．pats
D．shows
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