1. 用所给单词的适当形式填空

Daming: Are they (you) sunglasses?

Betty: No, they are not (I).

Daming: Whose sunglasses are they?

Betty: I think they are (Tony).

Daming: Are these sunglasses (you), Tony?

Tony: Yes, they are (I) sunglasses. Thank you.

Daming: You're welcome.