How do your parents get to work? Do they drive? If they do, you might try to ________ them to walk to work.

On May 16,2006, Du Shaozhong, deputy Director（副局长） of the Beijing Environment Protection Bureau（环境保护局）, didn’t drive to work. ________, he walked six kilometers to his office.

“This is to show my support for ‘No Car Day’,” he told reporters.

The “No Car Day” campaign（运动） asks Beijing drivers to leave their cars at home one day each month and walk to work. It also calls on Beijingers ________ cars on June 5, which is World Environment Day. The slogan for the day is: “If we don’t drive for one day, we can have one more day of blue sky.”

“We cannot control weather, ________ we can control when we drive,” said Wu Zhonghua, a car club chairman.

Beijing had 238 “blue sky” is a day ________ good air quality. In 2005, the number was 233.

However, a recent report suggests that Beijing had just 51 “blue sky” days in the first quarter this year. Much of the dust ________ the desert. But cars cause most of Beijing’s air pollution. Beijing has more than 2.6 million cars. They make 3,600 tons of ________ each day. In 2006, the city stopped running 4,000 old polluting buses and 30,000 taxis. But more than 1,000 new cars go on the road each day.