全国新课标高考英语语法填空专项训练
语法填空练习一
With the 1___
_____ (develop) of industry, air pollution is getting more and more serious. In Beijing, many people suffer different kinds of illnesses because 2______ air pollution.
Air pollution is caused by the following 3____
_(reason)
: about half of the problem is caused by vehicles. There are more and more cars, buses on the roads, and they give off 4__
______ (poison) gases. 25% of air pollution is caused by factories. Another factor is the smokers. Smoking not o ...