English de wen ti改错：1.It was due to the fact which he had been working very hard that he got a promotion.2.I just don't understand why it is that prevents so many teenagers form being as happy as expected.为什么这么改

wo de wen ti hai mei you chu xian wei she me wo ti wen de shi hou da bu chu wen zi English de wen ti改错：1.It was due to the fact which he had been working very hard that he got a promotion.2.I just don't understand why it is that prevents so many teenagers form being as happy as expected.为什么这么改 mei you wen ti mei you wen ti wo zen me kan bu dao wo de wen ti a ,pao dao na qu le kao zhao jia yuan zheng shu de xiang guan wen ti shang ci hui da de wen ti zm mei you xian shi yi kai ji jiu chu xian zhe yang de wen ti Sorry,I don't write .And I can write a litte English .wen ti shi :zhe ge she hui zui da wen ti yi tian ky ti wen ji ge wen ti wei shen me wo da bu chu han zi ne ,wo ti jiao de wen ti ye ti jiao bu shang ne baidu ti wen xu yao qiu zheng zui da de bu neng bei ax+by biao shi de shu shi :ab-a-bwo zai guo wai ,mei you zhong wen shu ru fa .shu lun wen ti .qiu zheng:zui da de bu neng bei ax+by biao shi de shu shi ab-a-b.GCD(a,b)=1.English:GCD(a,b)=1 show that ab-a-b is the large da ge ,wo de dian nao ye yu dao zhe ge wen ti,du wo yi sha guo ,ying gai shi wen jian shun huai le. yi ge wen ti?wo jia de da zi shu ru fa chu bu lai le ,zenm ban? 为什么guan yu 98nian yin ni (pai hua yun dong) de wen ti bu neng tong guo shen he nin de zuo wen