阅读下面的短文，根据上下文意思及所给首字母写出所缺单词。 E 1 year thousands of people get hurt or die in road accidents. H 2 can we make the roads safer? First, we must obey the traffic rules. If e 3 obeys the rules, the roads will be much safer. In our country, traffic keeps on the right side of the road. S 4 , we must stop and look both ways before crossing the road. Look left, look right, and then look left a 5 . Then, if we are s 6 that the road is clear, we can cross the road. Third, it is good to h 7 children, old people or blind people cross the road. Last, we must never play in the street. 1._____  2._____  3._____  4._____  5._____  6._____  7._____