阅读下面的对话，然后根据对话内容补全句子

Peter: Can I come in, Alice?

Alice: Yes, please.

Peter: Is this your pen?

Alice: Yes, it is. What’s that(那个) on the desk?

Peter: It’s a book

Alice: Is it your book?

Peter: No, it’s Zhang Hai’s.

Alice: Who(谁) is Zhang Hai?

Peter: He is my classmate.

Alice: I see. How about your book?

Peter: It’s in my bag. What’s this in English?

Alice: It’s a ruler.

Peter: Thank you. Goodbye.

Alice: Goodbye.

1. The p____________ is Alice’s.

2.Zhang Hai’s book is on the______________.

3.Zhang Hai is Peter’s________________.

4._____________ book is in his bag.

5.划线部分句子的意思是：

  ___________________________________________