- Thank you for calling. - _________A．Nice talking to you.B．That's fine.C．Don't mention it.D．Call back again.参考答案：A

- Thank you for your invitation.- _________A．Don't mention it.B．That's fine.C．It's a pleasure.D．Nice talking to you.参考答案：C

- How is the weather today? - _________A．It's Monday.B．It's a fine day today.C．It's March.D．It’s cloudless day.参考答案：D