как избрать необходимое прилагательное в предложении 1. John is good /better/

как избрать необходимое прилагательное в предложении 1. John is good /better/ the best pupil in our school. 2. The weather is good /better/ the best today than on Sunday. 3. I like ice cream much/ more/ the most then cakes. 4. Autumn is bad/ worse/ the worst season for me. 5. There are many/ more/ the most posters on the wall.