Por favor necesito esto resueltoSome of these sentences are correct, and some have a word which should not be there?

Por favor necesito esto resuelto Some of these sentences are correct, and some have a word which should not be there. If a sentence is correct put a tick ( / ). If it is incorrect, cross the unnecessary word out of the sentence and write it in the space. ? I've got the least powerful computer in the world. V ? London is mere bigger than Birmingham. More 1 Silver isn't as expensive as gold. 2 Indian food is the nicer than Chinese, I think. 3 The telephone is one of the most useful inventions ever 4 I feel a much better now, thank you. 5 The longer you wait, so the harder it'll be. 6 The piano is heavier than the sofa. 7 This is the most quickest way to the hotel. 8 You're taller than he is. 9 Who is the cleverest student in of the class? 10 The weather is getting hotter and more hotter.