请教改错 thanks !How could he done that on her ? on为啥要改为to 好像on sb. 也很常见啊? 怎么区分用on 还是to ?打错 更正 How could he have done that on her ？

how are you?-----good,thanks 改错 请教改错 thanks !How could he done that on her ? on为啥要改为to 好像on sb. 也很常见啊? 怎么区分用on 还是to ?打错 更正 How could he have done that on her ？ 英语改错.Thanks! -How are you?-Fine,thanks you .改错错了那里啊.. Thanks for call me改错 Hi Thanks for your e-mail .you aske me about my friends and how i like to do.英语改错 ----You were terrible.----Thanks a lot.(改错) How are you?-Fine,thanks. How nice flowers they are!改错改错、、 请教这句话的中文意思,thanks.i don't think you realize just how much it costs when you telephone your school CO的毒性请教大家CO中毒的机制. How are your mother?改错 How a big cake!改错 How a big fish!改错 改错How about this Sunnday how are you fine,thanks是什么意思? How to write a Note of Thanks how are you,mike?____,thanks