I studied at a middle school.为什么用at而不用in?

I studied at a middle school.为什么用at而不用in? that is the school ___last year.B at which i studied C where i studied at －______ he______ at this school last term?－Yes,I think so.A.Did,study B.Has,studied C.Was,study D.Did,studied I studied at home and ______ nothing （填空） ---You look tired.---Oh,I studied _________ the math test.A.on B.at C.for D.in选哪个 How long did you study yesterday?I studied( )four hours.A in B for C.at这是什么句型啊 I studied for the math test at home什I studied for the math test at home什么意思 that is the school last yearA.which I studied B.in which I studiedC.where I studied at D.in where I studied -----he---- at this school last team A.Did,studyB.Has,studied C.Was,studyD.Did,studied A:did you study art in collegeB:yes,I studied art at a college in the united states前者是in college 后者又变为 at 为何? You have failed in the test again .You ( ) hard at your subject .A should have studied B must have studied C may have studied D need have studied the last time i ____ her ,she _______ at a schoolthe last time i ____ her ,she ______at a school.A visited ; was studing B was visiting ; studied 两道结构一样的语法题,求赐教.that is the school____last year.This was the place __last yearthat is the school___last year.A.which I studied.B.at which I studied.C.where I studied.D.in where I studiedThis was the place ___last year.A.which i didn't see you at the party.oh i ()for english test A was studying B am syudying C studied 英语完成时态题,这道英语语法题,I have always regretted___ harder at school.A.not having studied B.having not studied C.not studying D.studying not the last time I( )her,she( )at a medical college.A.was visiting,studied B.visited,studies C.visited,was studying D.was visiting,was studying 1.I wouldn't have become an accountant now if I ____so hard when I was at the tutorial centre.A.didn't study B.hadn't studied C.wouldn't have studied D.didn't have studied我选了C,如果我没有在辅导中心努力学习我就不可能成为一 What did you do yesterday afternoon?I studied [ ]四个选项A.on time B.at times C.in time D.all the time