问题描述：
请问下面这些英语句子错在哪里, 还有,应该怎么改?
1.The reasons of the problems,in my opinions,has three.
2.Because the number of cars was too much.
3.People usually wait in the roads.
4.The number of cars increased slowly.
5.The government need to bulid more roads,
1.The reasons of the problems,in my opinions,has three.
2.Because the number of cars was too much.
3.People usually wait in the roads.
4.The number of cars increased slowly.
5.The government need to bulid more roads,
问题解答：
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