Vocabulary Quiz:

1. photograph

2. sheath

3. terrain

4. thorny

5. hardware

6. retire

7. recreational

8. generous

9. suburb

10. cell

11. spectator

12. labyrinth

13. coordinated

14. microscope

15. ham

16. adaptation

17. exponential

18. overdue

19. ripe

20. propulsion

Time left: 200 seconds