Put the words given into the correct box. (Em hãy kéo thả đáp án đúng vào vị trí cần điền)
highest
longest
largest
biggest
1. What’s the … mountain in the US?
2. The Amazone is the …river in the world.
3. Canada is the second …country in the world.
4. Is the elephant or the whale the … animal in the world?
