阅读理解

Grace: Good afternoon, Frank!

Frank: Good afternoon, Grace! How are you?

Grace: I'm fine. Thank you. Is this your cup?

Frank: No, my cup is black. This cup is green. It's my friend Tom's.

Grace: I like green. My pen is green. What's this in English?

Frank: It's a ruler. Its Alice's white ruler.

Grace: Can you spell "ruler"?

Frank: R-O-L-E-R?

Grace: No, it's R-U-L-E-R.

Frank: Oh, yes.