10.A, strange (light); the, western (sky)
11. Our (friend); a, small (boat); the, turbulent (river)
12. late (August); the, brief, northern (summer)
13. Stinging (snow); strong (winds); the, brave (rescuers)
14. Quick, efficient (workers); the, long (runway)
15. Violent (storms); the, radio (signals)
16. Intensive (study); the, gold (medal)
17. The, silver (rays); the, bright (moon); the, clear (waters); the, little (lake)
18. The, naval (convoys); new (supplies)
19. Heavy (sleds); the (equipment); the, frozen (tundra
