Find the odd one out

I. Find the odd one out.
1. A. relax B. rice C. play D. study
2. A. went B. got C. eat D. drank
3. A. volleyball B. football C. chess D. basketball
4. A. kick B. sporty C. play D. hit
5. A. net B. racket C. bicycle D. ball
6. A. gym B. athlete C. player D. swimmer
7. A. swimming B. high jump C. running D. marathon
8. A. hobby B. interest C. music D. pastime