how didn‘t you notice还是How come you didn't notice

how didn‘t you notice还是How come you didn't notice How did you not notice还是how didn‘t you notice?为什么? Did you notice the boy come in No,I didn't because I( ) TV 填 but they didn't notice How come you didn’t tell me about this before?和How come they I didn‘t notice you----------- a box when you came in You didn't notice she was drooling over you?She did it badly Kangkang didn't notice Hugh ____(leave). 1.I didn't _ (notice) you were going to leave. How come you didn't ask the gentlemen to stay for supper? didn't notice 与 wasn't noticing 的区别 —— in his study,he didn't notice that the teacher had come u