Написать 6 предложений на языке со сравнительной степенью и превосходной степенью

1 I think it would be more sensible to wait until weekend.
2 He's the brightest mind of the 20th century.
3 They practice everyday and demonstrate better and better results.
4 What's the highest mountain in our country?
5 The quality of their chocolate has gotten worse.
6 I've read all his books and this one is the least interesting.