1. On no account can we ignore the value of knowledge.

我们绝对不能忽视知识的价值。

2. It is time the authorities concerned took proper steps to solve the traffic problems.

该是有关当局采取适当的措施来解决交通问题的时候了。

3. Those who violate traffic regulations should be punished.

违反交通规则的人应该受到处罚。

4. There is no one but longs to go to college.

人们都希望上大学。

5. Since the examination is around the corner, I am compelled to give up doing sports.

既然考试迫在眉睫，我不得不放弃作运动。