7 He didn't leave school even though his family was poor.

-> Despite the fact that his family was poor, He didn't leave school
8 All the teachers love him because his conduct is good.

   - Because of his good conduct, all the teachers love him            

9 . We couldn’t study because it was noisy.

   - Because of the fact that it was noisy, we couldn't study.    
 

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

11. Because of the noise, Mary can't sleep