A: Look, this is my new schoolbag.
B: Oh, it's beautiful, Helen.
A: Thank you, Yang Ling. Oh, where's my ruler?
B: Don't worry. (别着急) Is it in your pencil case?
A: Look! It isn't here.
B: Is it on that desk?
A: No, my ruler is green. That ruler is blue.
B: Look, it's in your desk.
A: Yes. Thank you.