Поставьте предложения в отрицательную и вопросительную формы.

1)There are several mountain chains on the territory of the country

2)It varies from arctic in the north to subtropical in the south.

3)Peter defeated Sweden in the Great Northern War

4)Russia is a parliamentary republic

How many mountain chains are located in the country?

There aren't several mountain chains on the territory of the country

It does not vary from Arctic in the North to subtropical in the South.

It varies from Arctic in the North to subtropical ?

Russia is not a parliamentary Republic.

Russia is a parliamentary Republic?

Peter defeated Sweden in the great Northern war?

Peter did not defeat Sweden in the great Northern war