单项选择题

Since you are free, why ______ it now

A．don't
B．doesn't
C．do not
D．not do
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单项选择题
In 1998, to many westerners' surprise, Hong Kong carried ______ the economic crisis.
A．off
B．on
C．over
D．out
单项选择题
We regret ______ you your son has been killed in the battle in Iraq.
A．telling
B．having told
C．tell
D．to tell
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