By the year of 2053 there will be 487 million aged people in China, means that one third of the population will be over 60.
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.
He is so busy.He cannot afford enough time with his son________he wants to.