1. Why do you bebave less respectful less respectfully the least respectful these days? 2. He's the least, the less / least intelligent member of the family
3. The boys are quieter / more quieter, more quietly than usual.
4. If you study more hardly / hardlier barder, you won't fail.
5. I prefer the violin because I can carry it more easily / more easy / more easier than the guitar.
6. Eat more slow slowly! You should spend time enjoying your food.
7. He's moodyer / moodier than all my other cousins, but I still like him.
8. You're the most anxious anxiously woman I know. Don't worry, everything will be OK!
9. Adam's working the most hard bardest. Everyone else is checking their phones.
10. She wanted the most expensive expensivest dress but she didn't have enough money.
11. My new boss is kinder more kind than the previous one.
12. He's the most more optimistic person I've ever met.
13. Would you have thanked him if he'd been more helpfully / helpful?
14. If the roads had been less crowded, we would have driven more quickly, quicker.
15. If I'd known you were coming, the house would have been more tidily / tidier.