She has never gone skating,hasn't she?这句话哪错了

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• She has never gone skating,hasn't she?这句话哪错了
• she's never late for school,_____ _she?为什么不能用hasn‘t 用it's?打错了,是为什么不用has用is呢?
• She has never gone skating,hasn't she?这句话哪错了
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