Question

把下列句子變成復(fù)數(shù)形式。

①This is my sister.
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②That is his brother. 
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③What is this? 
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④Is this your friend?
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⑤That isn't a book
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Answer 1

①These are my sisters.
②Those are his brothers.
③What are these?
④Are these your friends?
⑤Those aren't books.