Hello!May I speak to Mr.Smith?--I'm sorry.______ I think he'll be back in an hour.怎么填,

问题描述:

Hello!May I speak to Mr.Smith?--I'm sorry.______ I think he'll be back in an hour.怎么填,
Hello!May I speak to Mr.Smith?
--I'm sorry.______ I think he'll be back in an hour.怎么填,

He isn’t here right now