1. (2022七上·哈尔滨期末) 从A-G选项中选出能填入空自处的最佳选项补全对话。(选项中有两项是多余的)

Teacher:

Anna: No, they're Bob's.

Teacher:

Anna: No, it isn't. The blue pen is his.

Teacher:

Anna: It's Helen's. And the green pen is hers, too.

Teacher: And the eraser?

Anna: Yes, it is.

Teacher: Thank you for your help, Anna.

Anna:

A. Is that your? B. And is this his green pen? C. You're welcome. D. Are these your pencils? E. What about this dictionary? F. Are these yours? G. Is that yours?