Each of these sentences has a different basic grammatical mistake. Find the mistakes and correct them.

5. That's the boy who brother I played football with as a child.
6. The tourist board gave us lots of informations about the city.
7. Unless you don't work harder, you'll fail your exam.
8. We considered to go to the concert, but we felt too tired.
9. I really wish I would have more time to study.
10. She apologised for been late.
11. I am knowing she enjoys going to rock concerts.
12. I can't get used to start work early in the morning.
13. She managed to get to the top of the tower despite of her fear of heights.
14. My teacher won't let me to get out of doing homework.
15. If I'd have known she was in town, I'd have arranged to meet her.
16. They've been living in this town since at least 25 years.
17. He's a such hard worker that he's sure to do well.
18. Computer games are a lot more cheaper now than they used to be.
19. I found the film absolutely terrified.
20. He might decided to become a jazz musician. ​