Find the mistake and correct them.
1. You needn't to buy him a pair of shoes.
2. He didn't succeed to passing his exams.
3. There were a lots of people at the meeting.
4. She insisted on help us move the furniture.
5. The police is looking for the missing boy.
6. I haven't got any infotmations about the concert.
7. I quiet disagree with your ideas.
8. He's the most helpful person I have never met.