阅读对话,选择正确的答案。
Zhang Ming: Hi, Lingling! What is it?
Lingling: It's my schoolbag. It's green.
Zhang Ming: Open your schoolbag. What's in it?
Lingling: My English book and my maths book.
Zhang Ming: What is it?
Lingling: It's my pencil box. It's yellow.
Zhang Ming: Open your pencil box. What's in it?
Lingling: My blue pen.