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【单选题】

Don’t throw away the waste paper.It needs so that it can be reused.

A.
to destroy
B.
destroying
C.
to collect
D.
collecting
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参考答案:
参考解析:
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举一反三

【单选题】The doctor_____ after he_____ the patient.[ ]

A.
looked worrying; looked over
B.
seemed like worried; looked after
C.
looks worried; look after
D.
seemed worried; looked over