----- Could you tell me _______? ---- Sorry. I don’t know. I was not at the meeting. A. what does he say at the meeting B. what did he say at the meeting C. what he says at the
--Did you put forward your suggestion? --No，and I ______because they had already made a decision A．don’t need to B．needn’t have done so C．needn’t do so D
和直线
，则在平面