The reason for his success is ______ he worked very hard.
As is reported,it is 100 years ________ Qinghua University was founded.
I'm sorry you've been waiting so long,but it'll still be some time ________ Brian gets back.(2008·北京)
He had no sooner finished his speech________ the students started cheering.(2011·辽宁)
He smiled politely ________ Mary apologized for her drunken friends.(2012·山东)
________ we have enough evidence,we can't win the case.