Distinguished guests and friends . _____the ceremony of the 50th Anniversary this morning are our alumni (校友) from home and abroad .
My parents live in a small village. They always keep candles in the house ___ there is a power cut.
It is difficult for us to learn a lesson in life _____we’ve actually had that lesson.
____fire, all exits must be kept clear.
—Where’s that report? —I brought it to you ____you were in Mr. Black’s office yesterday.
This is a junior school. You should go to a senior school girls of your age.