阅读理解,选择正确的答案。
Sarah: Hi, John. I have a new schoolbag.
John: Really? May I see it?
Sarah: Look! It's green.
John: Wow, so nice! What's in your schoolbag?
Sarah: Three storybooks, two maths books, five pens, two pencils, two erasers and a pencil box.
John: Wow! It's a heavy schoolbag.
Sarah: Yes. It's so heavy! What's in your schoolbag?
John: A Chinese book, a pen and a notebook.
Sarah: Oh, your schoolbag is so light.