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最佳答案:Yes,it is/ No,it isn't
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最佳答案:NO,she isn't.
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最佳答案:现在完成时一般疑问句结构:Have/Has+主语+动词过去分词+其它肯定回答:Yes,+主语+have/has.否定回答:No,+主语+haven't/hasn
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最佳答案:there is a small dog hide in the grass.Is there a small dog hide in the grass? 一