补全对话
（At Mr.White’s office in a middle school）
A:Hello!1　　　?
B:Speaking,please.
A:I’m Peter’s mother.I’d like to ask for my son.
B:2　　　?
A:He doesn’t feel well this morning.He has a cold.
B:3　　　.Is it serious?
A:Not very serious.But the doctor asked him to stay in bed and have a good rest.
B:Don’t worry.4　　　.
A:Thank you,sir.Goodbye!
B:5　　　!