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As along the river bank, she was singing a pop song.A.walkingB.walkedC.to walkD.

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As along the river bank, she was singing a pop song.A.walkingB.walkedC.to walkD.

As ______along the river bank, she was singing a pop song.

A.walkingB.walkedC.to walkD.walk

试题答案

A

解析