Sure, here are the rewritten sentences:

1. In spite of being a poor student, Tom studied very well.
2. Because Mary was sick, she could not go to school.
3. Despite the bad weather, she went to school on time.
4. In spite of being sick, my mother told me to go to school.
5. Because of the big storm, I stayed at home.
6. Despite his bad grades, Tom was admitted to the university.
7. Despite having a physical handicap, she has become a successful woman.
8. Although Tom had a good salary, he gave up his job.
9. In spite of not finishing the paper, he went to sleep.
10. Even though the prices are high, my daughter insists on going to the movies.
11. Because jeans were cheap, many people began to wear them.
12. Because of his carelessness, Tom lost the game.
13. Despite behaving well, no one loves her.
14. Because of the cold weather, the crops are late this year.
15. Because Tom was late, Mary was worried.
16. Because of his bad leg, Tom walked slowly.
17. Because I want the English course, I came here.
18. Despite the hot weather, I went to school.
19. Because of the dust in the room, I can’t go in.
20. Because of too much smoke, we have to wear masks.
21. Despite not being an intelligent student, Nam can learn very fast.
22. Because Hoa was rich, she could buy that house.
23. Because of the heavy rain, I couldn't go to school.
24. Because he was sick, his father asked him to stay at home.
25. Because there was an accident, I was late.
26. Despite not being an intelligent child, Bean can speak English very well.
27. Because Phuong was tall, she never wears high heels.