Put the adjectives in brackets into the comparative or superlative form

1. I can’t understand you. Could you speak a bit (slowly), please?
2. It was very cold yesterday, but it’s slightly (warm) today.
3. Did that coat cost a lot of money? Yes, it was (expensive) coat in the shop.
4. I think my sister is (hard-working) than me.
5. The Avengers are (good) film I have ever seen.