31.The company had about 20 notebook computers but only one third _______used regularly . Now we have 60 working all day long.
I couldn't do my homework with all that noise __________.
With the financial crisis __________ across the globe, a lot of companies have shut down and many people have been out of work.
Students should have their homework __________ by themselves not by copying others'.
If you want to make yourself __________, you are above all __________ others.
Hearing the 2009 World Winter University Games __________ open, all the people in the Harbin Sports Center Gym burst into cheers.