__he entered the university,his english has been much improved. A,after B,since为什么A不对?我看其他问题上说是完成时,所以用B那如果用A该怎么用?谢谢

__he entered the university,his english has been much improved.A after B since C beforeA和C用于怎样的句子中? __he entered the university,his english has been much improved. A,after B,since为什么A不对?我看其他问题上说是完成时,所以用B那如果用A该怎么用?谢谢 you are the uni que of my whole The thief entered the room by the The idea never entered my head once.为何不能把entered改成entered into或entered to? The exam was __he didn’t pass it. The reason __he explained for __he was late again was not so believable(填why/which/that) You have entered the depths of my The Psword you entered is not the serial you entered is invalid是什么意思? The Network Name you have entered is the activationkey you entered is invalid是什么意思 You have entered the wrong verification She fell______before I entered the room.(sleep) The name you entered contains illegal characters. the email addresses entered do tot match Has Jane entered the writing c()? 英语翻译You entered the verification image incorrectly!