根据对话内容，从方框中选择合适的选项补全对话，其中有两项多余。

A. Two months. B. When are you leaving? C. Have you got any plans for the summer holidays? D. When did you leave? E.I will go to different parts of the country with the family. F. Which city are you going? G. I will go there by air

Lingling: Hello, Daming,.

Daming: His, Lingling. Yes, I have. I am going to stay with an American family.

Lingling: Wow! That's a good way to improve your English.

Daming: I'm flying to San Francisco. The family live there.

Lingling: How long are you going to stay with them?

Daming:

Lingling: Two months! That's really a long time.

Daming: Well, there's a lot to do in America.

Lingling:

Daming: On July 1st.