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【单选题】

I find it difficult ________.
[ ]

A.
to mend this watch
B.
this watch to mend
C.
mend this watch
D.
this watch mended
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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