She is his girl friend．(改为否定句)

　　She ______ his girl friend．

These aren’t his brothers．(改为单数形式)

　　______ ______ his ______.

That is my grandfather．(改为一般疑问句)

　　______ ______ ______ grandfather?

This is a book．(改成复数形式)

　　______ ______ books．

These are my aunts．(改为单数形式)

　　______ ______ my ______．

That is his sister．(改为复数形式)

　　______ ______ his ______．

He is your friend．(改为复数形式)

　　______ ______ your ______.

Is this your brother?(作否定回答)

_________ , ________ __________ .

Guo Peng is a boy．(改为一般疑问句)

　　______ Guo Peng a boy?

My name is David．Gina is my sister．I am her ______．