选择合适的句子，补全对话（共5小题，每小题2分）

A: Hello, LiuYun. __________________________ ? 
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: ______________________________.