1编号：15629题型：单选题测试正确率：57.14%
Three quarters of the fans from his hometown.
2编号：15628题型：单选题测试正确率：84.15%
One fourth of people here Shanghai Expo 2010 once.
3编号：15625题型：单选题测试正确率：71.48%
—How many doctors are there in this hospital?—About 200. One third of them men doctors.
4编号：3248题型：单选题测试正确率：31.87%
Look, _____ students _____ playing basketball on the playground.
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