Although a large __________ of money was used and a __________ of doctors and nurses lost their lives in fighting against SARS, we were able to win the battle in the end.
Students ______ to do some voluntary work every year.
You can smoke here ______ you leave a window open to let the smoke out.
It is usually cheaper to have the goods ______ by sea than by air.
The pianist ______ a love for music when he was a little boy.
Jack, look! Everybody is doing homework quietly. ______ you make a noise in class?