问题描述：
Is his birthday on July 7th?作否定回答.
是用No,he isn't.还是No,it isn't?如果是后者的话,
是用No,he isn't.还是No,it isn't?如果是后者的话,
问题解答：
我来补答展开全文阅读
问题描述：
问题解答：
我来补答