题目

He would have been willing to accompany me _______ him how important it was to me. A . if I have told B . had I told C . should I tell D . if I could tell 答案：B 有6间房间安排4位旅游者住，每人可以进住任一房间，且进住各房间是等可能的，则恰有4个房间各有1人的概率是___________。