12. Because of the crowded street, we couldn't drive.
14. Because of snowing continuosly, we couldn't go out.
15. Because of the careless driver, the accident happened.
16. Because of the broken door, we decided to fix it.
17. Because of my absent friend, I must copy all the lessons for him.
18. In spite of being clever, she didn't succeed.
20. Despite his good salary, he is unhappy.
