2012小升初英语试题完形填空专项训练24
2012小升初英语试题完形填空专项训练24
二、 完形填空
In the old days，in London，the smog was very thick. Car and bus drivers 1to drive very slowly they could 2see the.road in front of them even during the daytime. People did not like going out in the smog. 3they had to go out，they wore smog masks over their faces.
In December 1952，a very， 4dark cloud came down over.London.It was the 5smog Londoners had ever had. 6of it was bad factory smoke. Nearly fi
