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Mr Smith, looking , started to work out a problem.A.puzzled, puzzlingB.puzzling,

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Mr Smith, looking , started to work out a problem.A.puzzled, puzzlingB.puzzling,

Mr Smith, looking ______, started to work out a        problem.

A.puzzled, puzzling

B.puzzling, puzzled

C.puzzled, puzzled

D.puzzling, puzzling

试题答案

A

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