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were能否缩写He was是否等于he'sthey were 是否等于 they're请给出严格证明

分类: 作业答案 • 2021-12-20 07:02:27

问题描述：

were能否缩写
He was是否等于he's
they were 是否等于 they're
请给出严格证明

答