单项选择题

Now that you have a job, you must exert (尽力) yourself in ______ you do at work.

A．however
B．no matter what
C．no matter how
D．whatever
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单项选择题
—I have to get to the railway station by five o'clock, but look, it's almost five.—______. This clock is twenty minutes fast.
A．No problem
B．That's too bad
C．Take it easy
D．Sure, you can
单项选择题
I asked him if he had______oil.
A．any
B．some
C．an
D．much
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