Sagot :
Bonjour !
1. Mount Elbrus, in Russia, is the highest mountain in Europe.
2. The Thames is the longest river in England.
3. Japan is the most expensive country in the world.
4. The Chihuahua is the smallest dog in the world.
5. Football is the most popular sport in Great Britain.
6. The Atacama Deset is the driest place in the world.
Explications :
Adjectifs longs (plus de 2 syllabes) : the most + adjectif (the most expensive)
Adjectifs courts qui finissent par y : the + adjectif - y + i + est (the driest)
Adjectifs courts : the + adjectif + est (consonne doublée si besoin) : the smallest
J'espère t'avoir aidé. Bon courage !