1. She went home because she was tired
She was tired,so she went home
2. We didn't enjoy our holiday because the weather was bad.
The weather was bad,so we didn't enjoy our holiday
3. He worked hard so he passed all his exams
He passed all his exams because he worked hard
4. I enjoy history lessons because I like the teacher
I like the teacher so i enjoy history lessons
5. It started to rain so we stopped playing tennis
We stopped playing tennis because it started to rain.