选择方框内的句子，补全对话

A. What did you do yesterday? B. How many children were there at the party? C. Yes, he did. D. Why did you go to visit him? E. No, they weren't.

A: Hello, Lily.

B: I visited Mike.

A:

B: Because it was his birthday yesterday.

A: Did he have a birthday party?

B:

A:

B: There were fifteen children at the party.

A: Were Mike's parents at home?

B: