I'm so clever that sometimes I don't understand a single wor

sometimes I just don’t understand what people are saying. i don't understand I can't understand.I don't understand.I'm not understand,这三个 1道高中英语单选.I just don`t understand _____ that prevents so many Actually you don't understand me,so how can I tell you that I"m loving living every single day but sometimes I feel so. I don't agree ( ) a single word that you have said. I simply couldn't understand how it ______ that you did so m I'm afraid (that) you don't understand what you said. i can't understand the reason____ you don't like him A that I don"t understand this answer.A.quiet B.so C.very D.too请解释 I don't understand,Could you e------that again .