Not only ________ give people relaxation and pleasure, but ________ increase their knowledge of any kind.
11.---Did you call the airline to __________your flight booking? ---Yes, I did.
10.No important progress was made in UN Climate Conference in Copenhagen as__________of the rich countries agreed to offer large amounts of money to fight global warming.
9.---Will you come over to Beijing for the may Day holiday? ---I’d like to, but my family__________the 2010 World Expo in Shanghai during the holiday.
8.The problem of the present world is that those who are imaginative have little experience__________those who are experienced have weak imagination.
7.Schools across China are expected to hire 50,000 college graduates this year as short-term teachers __________increase job opportunities.