Question

把下列句子变成复数形式。

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

Answer 1

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