问题描述：
跪求正解,this,that,或those,these时,附加疑问句中主语用it和they.但是如果我的句子是：
this is tom,后边是用isn't it?还是isn't he?请求各位高人知道!
this is tom,后边是用isn't it?还是isn't he?请求各位高人知道!
问题解答：
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