1. (2018七上·佳木斯期中) 用适当的句子补全对话

A: Excuse me, Mary. I can't find my dictionary.?

B: Sure.？

A:No，it isn't. Mine is bigger.

B: ?

A: It's black and white.

B: Well. Is that your dictionary over there?

A: .Thank you very much.

B: .