错.
应该是,No,it isn't.
单数的指示代词用it替代,复数的指示代词用they替代.
Is that his brother?No,he isn't.这个答语正确么
Is that his brother?No,he isn't.这个答语正确么
英语人气：484 ℃时间：2020-04-28 09:44:14
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