Bonjours j'ai besoins d'aide en anglais

Excercices
Complete using : beautiful / high / small / dangerous / long
1: Mount Everest is .... mountain in the world
2: It is also one of ..... to climb
3: The Mississipi is .... River in the USA
4: The Vatican is one of .... states in the world
5: Australia is one of ..... countries I have ever seen

S'il vous plaît
Merci