从方框中选出适当的句子补全对话。 A. Who is that girl? B. but they're in different classes. C. They are sisters. D. Good morning. E. Where does she come from? A: Good morning. B: __ 1 __ A: Do you have a friend here? B: Yes, I do. A: __ 2 __ B: Oh. She is my friend, Amy. A: __ 3 __ B: She comes from the U. S. A. A: She looks like Judy. B: __ 4 __ A: Are they in the same class ? B: No. They are in the same grade, __ 5 __