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【单选题】

Thestudentsputupsomesigns________theriverside________thewaterclean.
[ ]

A.
by,tokeep
B.
at,tokeep
C.
by,keep
D.
in,for
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参考解析:
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举一反三

【单选题】My friend Peter _______ Amy last month.[ ]

A.
married
B.
was married with
C.
married to
D.
got married