I am used to traveling by air and only on one occasion have I ever felt frightened.have I 在句中为什么这么用为什么要加have,

i am used to.. i am used to my I am used to lonely i(am used to)(used to)swimming in cold water. I am get used to be lonely I am not used to my shape i am used to catch the eyes. I __stay up late Rellay I did't I _going to bed before ten o'clock A am used to am used toBused to am used to C am used to used to D used to used to i use和i used to和I am used to的区别和用法 Used to be used toI used to be living here .I am used to living here.为什么第一句不对? I am also what i used to be 翻译 Am I the person I used to be翻译 I’m not that I am used to I am not what I used to be I am what i used to be forever You don‘t do some sports,do you?No,I ____,but now I _____climbing mountains to keep fit.A used to ；am used to B am used to ；used toC was used to；used to D use to ；used to↓No,I used to,but now I am used to climbing mountains to keep fit. i'm used to it为什么要加am i am getting used to the life here