9. Although it was raining heavily, we still went to school.
=> In spite of the heavy rain, we still went to school.
10. Because I studied hard, I passed the exam.
=> Because of studying hard, I passed the exam.
11. We couldn't study because it is noisy.
=> Because of the noise, we couldn't study 
12. Even though it was cold, I went swimming.

Despite being cold, I went swimming.
13. These students didn't arrive late though there was a traffic jam.
=> Despite the traffic jam, these students didn't arrive late
14. Marry can't sleep because there was the noise.
=>Because of the noise, Marry can't sleep
15. She didn't get ill although she worked very hard all day.

Despite working very hard all day, she didn't get ill
16. Because Quan was late, he finished his test on time.

Because of being late, he finished his test on time.

9. In spite of the heavy rain, we still went to school.

10. Because of studying hard, I passed the exam.

11. Because of the noise, we couldn't study

12. In spite of the cold weather, we went swimming.

13. Despite the traffic jam these students didn't arrive late.

14. Because of the noise Mary can't sleep.

15. In spite of working very hard all day, she didn't get ill.

16. Because of being late, he finished his test on time.