1. It was getting late, so we decided to book into a hotel.

2. Because of her excellent grades, Marry was given a scholarship.

3. There is no traffic light along this road, so an accident often happens.

4. The school is very hot and uncomfortable because there are no trees and grass around the school.

5. The boy was arrested by the police due to his bad behavior.

6. We should study hard, so we pass the exam.

7. Thanks to the sophisticated technology, we can share everything by email, facebook, blogs, tweets, etc.

8. My brother was very sleepy, so he stayed up past midnight.

9. The villagers usually throw their rubbish in the river, therefore the river floods its surrounding.

10. The floor is very slippery, so we must be careful.

There were multiple possible answers for each question, so my apologies if some end up being wrong.