An old man was run over by a car
Answer:
1. the down town area is so crowded that it is difficult to get a taxi
2.my sister is so young that she can't go to the zoo alone
3.the road is so narrow that it is difficult for two cars to pass by each other
4.the tv program was so interesting that the children didn't want to go to bed early
5.the streets are so crowded that traffic jams usually happen
