单项选择题

I'll lend you my computer（）you promise to take care of it.

A．unless
B．while
C．as
D．if

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单项选择题

I have not gone to see the doctor for a long time, but today（）

A．I'm going to
B．I'm going to see
C．I'm going
D．I go

单项选择题

Either you or Lin Ming（）supposed to do the job.

A．are
B．be
C．being
D．is

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