1. Act naturally
2. Found missing
3. Resident alien
4. Advanced BASIC
5. Genuine imitation
6. Airline food
7. Political science
8. Tight slacks
9. Definite maybe
10. Pretty ugly
11. Good grief
12. Same difference
13. Almost exactly
14. Government organization
15. Legally drunk
16. Working vacation
17. Soft rock
18. Plastic glasses
19. Terribly pleased
20. Diet ice cream