Are they doing housework?
Yes,they are.
They are not doing housework.
They are doing housework.1改一般疑问句并做肯定否定回答2该否定句
They are doing housework.1改一般疑问句并做肯定否定回答2该否定句
英语人气:760 ℃时间:2019-10-17 05:35:49
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