A.stand by
B.stand for
C.stood by
D.stood for
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A.to pay attention
B.paying attention
C.pay attention
D.your paying attention
A.operated
B.made
C.run
D.done
A.which
B.what
C.that
D.whose
A.in the case
B.in any case
C.in no case
D.in case
A.come from
B.come in
C.come out
D.come up
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