where they had been used to stay in the past 从句、 完形填空里的原句是because in that foreign hotel where they had been used to stay in the past,no meals were served ______ seven in the evening.A.on B.after C.during D.until

A asked her FRIENDS（ ）DURING THE THREE-DAY HOLIDAYWHERE THEY HAD BEEN? WHERE HAD THEY BEEN? WHERE THEY HAD GONE?WHERE HAD THEY GONE?WHY? where had she been? Where have they been? They asked me ( )during the holidays.A where i had gone B where i had been 选哪个 翻译（拒绝在线翻译）：They asked us where else we had been. others said they avoided social situations where they had been laughed at before讲下意思,并说下语法, They asked me ______ during the last May Day holidays.A. where I had gone B. where I have gone C. where I had been D. where I have been 请问A与C的区别?谢谢 They set up a plant _ produced things _ had never been seen before.A.where,which B.which,that C.where,that D.that,where 英语翻译they needed some way to see the invisible ,the very faintest traces of where the paint had been. they were still there,___they had always been.the answer is where ,why not use in which? After four hours’drive,they reached ( )they thought was the place they had been dreaming of.答案上是what,为什么不是where呢? where have they been?是现在完成时吗? my friend asked me ---------- A,where I had been B.where had I been They asked me where I had been during the May Day holidays为什么Been后不用加上to?还有其他这样的句型吗? 英语翻译they had been- yes,well- pecked 英语翻译those with degrees from elite universities catch up fairly quickly to where they otherwise would have been if they had graduated in better times He asked me___during the summer holidays .A .where I had been B.where I had gone C .where had been D.where had I gone Things were not ———they had been beforeA.where B.as where可做been的表语,也可做关系词,为什么不能选A呢?请高手帮我详细解释一下,谢谢!