2.___is this? It is a book.

1.____ is my baseball? It’s under the chair.

10． Where are the books? _______are on the sofa.

9.　 Hello, Mary, ____ is my new friend, Helen. Helen , ____ is my mother.

8.　 What are these? __________ are books.

7.　 Is your brother’s name Tony?　 Yes，____ is.

6.　 Are those your books? 　Yes, ____ are.

5.　 That ___　 my brother and those __my sisters.

4.　 Is Mona his friend?　 Yes, ___ is.

3.　 Is that _____(you) sister?　 No, _____ isn’t.