MISSING LINK CXXVII

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. Boy..........Husband..........Wife
2. Day..........Odd..........Desk
3. Gun..........Wire..........Influence
4. Line..........Street..........Border
5. Trap..........French..........Revolving
6. Pencil..........Paper..........Drug
7. Trade..........Gender..........Generation
8. Writer..........Story..........Town
9. Class..........Brass..........Key
10. Witches.....French hens.....Area Code Numbers

Answers:

1. House
2. Kinds of jobs
3. Things you can be under
4. Things you can cross
5. Kinds of doors
6. Pusher
7. Kinds of gaps
8. Ghost
9. Kinds of rings
10. Things that come in threes