Ms. Smart正在给Sam打电话，根据对话内容选择合适的句子补全对话。

A．I will be home at eight o’clock.

B．Yes, this is Sam speaking.

C．Don’t worry! Because today is Jim’s birthday.

D．I’m at Jim’s home.

E．Thank you! Goodbye!

Ms. Smart: Is that Sam?
Sam:_________
Ms. Smart: Where are you?
Sam:_________
Ms. Smart: Will you be home at seven o’clock?
Sam:_________
Ms. Smart: Why? That’s too late.
Sam:_________
Ms. Smart: OK! Have a good time.
Sam: _________