I don't know about him ,( )comment on him behind his back.A.let along B.let go 为什么?

I don't(know)the teacher,but I(know about)her.可以换成know about;know? I don't(know)the teacher,but I(know about)her.可以换成know about ; know? 为什么不是I don't know呢?what other things don't I know about America? i know ,so i don't take about i don't know what are u talking about,stupid i don't know how()(tell) you about this i don't know what to( ) about the football march. I don't know what you are thinking about I don't know. i don't know h后填什么词 I don't understand you.I don't know what you are thinking about! I don't know about it and I don't care,either.转换一下句型：I don't know about it,__ __I care. “i don't know you know i don't know I don't know about his job,and I dong't care句型转换 I don't know about his job ,____ ____ I care. I_____（not tell)about it.so I don't know about it I don't know much about China的同义句 I know only _____ ____ about China 填个词i don t know what I can do about it,I’m completely____（迷茫,不知所措) 英语翻译Sometimes I don’t answer because I don’t how to talk about something that I don’t want to talk about,meanwhile I don’t know how to answer the others if I don’t want to talk.