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【单选题】

They arrived Shanghai a cold morning.
[ ]

A.
in: in
B.
in: on
C.
at: on
D.
at: in
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参考答案:
参考解析:
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举一反三

【单选题】He oftenEnglish with the classmates.

A.
practice speak
B.
practices speak
C.
practices speaking
D.
practice speaking