You should do exercise regularly.
2. Jane didn't join our programme so as to take a summer course.
3. Everyone dislike him since he behaved very rudely.
4. The do volunteer work because they like doing something useful.
5. I won't be able to attend the meeting since I'll be on holiday with my family.
6. We decided to stay at home and watch TV as it was raining heavily.
7. He's training hard because he wants to get fit.
8. Sally didn't go to school yesterday since she was ill.