单选题 Johnson. I got home very late last night. I hope I didn"t disturb you.
Landlady: ______.
【正确答案】 B
【答案解析】[解析] 只有B项逗号前后保持一致(No, I didn"t hear a thing),符合语法要求。其他选项逗号前后都有矛盾,属于语法错误。