More teens are smoking in Beijing, ______ the number of primary and middle school students picking up the habit has more than doubled from previous years.

________full use of the chance, or you will never achieve your dream of overseas study

While he 　　　　the freshman basketball team in high school, Michael didn’t make it as a member.

We can hardly believe his excuse for his late show _______ his car broke down halfway

I don’t think Mr. Tyler’s lecture _____ the student , for they appeared quitepuzzled.[ ]