Объяснение:

1. It isn't hot today. / It's hot today.

2. It isn't windy today. / It's windy today.

3. My hands aren't cold.

4. Brazil is a very big country.

5. Diamonds aren't cheap.

6. Toronto isn't in the US.

I am hungry; I am not hungry;

I am a good swimmer; I am not a good

swimmer.

I am interested in football;l am not

interested in football.