1- The Mekong River is ( short )…………………….. than the Amazon River.
=> Shorter
2- Nile is the ( long ) ………………………………….river in the world.
=>Longest
3- Is a snake ( dangerous )……………………………. than a dog?
=> More dangerous
4- Ho Chi Minh City is the ( large)…………………... city in Viet Nam
=>Largest