1. Complete the questions and answer them
Пример :
The USA is the biggest country in the world, isn't it? - No, it isn't.
1. There are fifty states in the USA,___________? ________________.
2. The US capital was named after G. Washington, ___________? ______________.
3. American nature is very beautiful.______________? _______________.
4. You need a lot of courage to cross the falls,________________________? ____________.