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【单选题】

Wouldyou please show me _____ this machine?
[ ]

A.
where to use
B.
how to use
C.
what to use
D.
why to use
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参考解析:
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【单选题】Do you remember last time?[ ]

A.
what is your teacher saying
B.
what your teacher said
C.
what did your teacher say
D.
what your teacher says

【单选题】Do you know the man _______?

A.
whom I spoke
B.
to who spoke
C.
I spoke to
D.
that I spoke