Choose the right options

the Appalachian Mountains

1. [the|—]Grand Canyon
2. [the|—]USA
3. [the|—]Hawaii
4. [the|—-]Australia
5. [the|—]Sahara Desert
6. [the|—]Death Valley
7. [the|—]Rockies
8. [the|—]Atlantic Ocean
9. [the|—]Colorado River
10. [the|—] Lake Badwater
11. [the|—] Potomac River
12. [the|—]Alaska
13. [the|—]Melbourne
14. [the|—]Uluru Rock
15. [the|—]Lake Baikal