1. He is afflicted ________ a serious ailment.

2. Regular exercise is beneficial ________ health.

3. He is worthy ________ our reverence and esteem.

4. Don’t brood ________ your past failures.

5. We decided to call ________ on the principal.

6. Never deviate ________ the path of truth and virtue.

7. We must provide facilities ________ recreation.

8. There is no cure ________ AIDS yet.

9. During the cold war era, the US and the USSR were competing ________ each other for world domination.

10. She insisted ________ my leaving the room.