用适当的代词完成下列句子。

This is my mother. ________ name is Anna.

下面是Tom的家谱，请根据Tom对他们的称呼，填入图示中空白的部分。

根据题后的要求完成下列句子。

That is my ID card.(对划线部分提问)

________ ________ that?

根据题后的要求完成下列句子。

This is an eraser.(对划线部分提问)

________ ________ this?

根据题后的要求完成下列句子。

That is my ring.(变为一般疑问句)

________ ________ ________ ring?

根据题后的要求完成下列句子。

This is a key.(变为一般疑问句)

________ ________ a key?

根据题后的要求完成下列句子。

Is that a pencil?(变否定回答)

________, it ________.

根据题后的要求完成下列句子。

Is this his backpack?(作肯定回答)

________, It is.

根据题后的要求完成下列句子。

Is this your book?(变为陈述句)

________ ________ ________ book.

请根据本单元的知识完成对话。

　　A: What’s this ________ ________?

　　B: It's ________ ________ ________.

　　A: Is it your computer game?

　　B: Yes, ________ ________.

　　A: And what's that? Is it your eraser?

　　B: ________, it is.

　　A: How do you spell eraser?

　　B: ________.

　　A: Is that your notebook?

　　B: ________, ________ my pencil case.