Speaker A: Excuse me, Mr. Brown, but can I speak to you for a momentSpeaker B: ______

A．Sorry, what would you like to speak to me about

B．Well, I'm afraid we have to find some other time. I'm fully occupied now.

C．Yes, can you wait until the meeting is over

D．It's a pleasure. Will you sit down

有没有（），是衡量其工作合格与否、称职与否的首要标准。

A、责任心

B、主动性

C、创造力

D、领导力