联系上下文补全对话。

A. This is my English friend, Lucy. B. How are you? C. Yes, we're home. D. Did you come back yesterday? E. Do you live in London too?

Sam: Hello, John.

John: I'm fine, thank you. You are back from London.

Sam:

John:

Sam: No, we came back last week. 

John: Hello, Lucy.

Lucy: Hi, John.

John: No, I live in Beijing now.