MISSING LINK L

Each trio of words below shares a Missing Link - that is, its members have something in common, obvious or not. For example, RIVERS, NOSES, & VIOLINS can all have BRIDGES.

1. Skirt..........Lands..........Roots
2. Rock..........Roll..........Spread
3. Theory..........Cheese..........Bean                             
4. Salt..........Fresh..........White
5. Back..........Crawl..........Work
6. Reading..........Stick..........Service
7. Pitched..........Priced..........Impact
8. Rice..........Sand..........Fly
9. Play..........Camp..........Battle
10. Bus..........Back..........Short

Answers:

1. Grass
2. Bed
3. String
4. Water
5. Kinds of spaces
6. Lip
7. High
8. Paper
9. Ground
10. Kinds of stops