university前用at还是in?I currently serve as a research assistant in the Center for Mathematics and Physics at(in) Beijing University.

university前用at还是in?I currently serve as a research assistant in the Center for Mathematics and Physics at(in) Beijing University. university前用什么介词?at还是in? university 用介词in 还是at?in the university?at the university?请朋友们多指点..那么比如:He is professor of philosophy ___that university.这里用IN 还是AT department stores前用in还是at University前用不定冠词a还是an? which university is he stuying at 还是in? at university和in the university 节日前用on还是in还是at? Wednesday前用on 还是in 还是 at 英语语法 这句话对么 在线等my mother was a literature teacher in university. 是用in还是at啊 用at 还是in 还是其他介词xxx专业 at-in-of xxxx university书面的哪个正确 我感觉这三个都对呢 区别在哪 the morning of sunday前用on还是at in thanksgiving day前的介词用at 还是in? Sunday前应该用in,on,at还是of? a cold morning 前介词用什么at还是in说错了，是at还是on 如何用英文表达“在大学里”?介词应该用at还是in,或者是两者皆可?at the universityin the university I'll never forget the day on which I entered Anhui University.这里为什么用on,用at或in不行吗? I have a robot () the home 用in还是at