问题 补全对话,情景问答 将下列几个句子组成一段对话。A. What's this, Bob?B. Yes, I am.C. No, I'm Bob.D. It's a room.E. Are you Alice?Bob: Hi, 1 Alice: 2 Are you David?Bob: 3 Alice: 4 Bob: 5 答案 1-5 EBCAD