Как выбрать правильную степень сравнения в следующих предложениях?

1. Summer is ...(warmer/the warmest) season.
2. This topic is ...(difficult/more difficult) than the previous one.
3. This film is ...(the most interesting/more interesting) than this cartoon.
4. I like this red dress ...(better/the best) than that yellow dress.
5. This sofa is ...(the most comfortable/more comfortable) sofa I have ever sat.
6. February is ...(colder/the coldest) month of winter.

Английский язык 7 класс Степени сравнения прилагательных Новый