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…

Конечно! Давайте разберем каждое предложение и отметим, какие из них правильные, а какие содержат лишние слова.

1. I've got the least powerful computer in the world.
   ✓

2. London is mere bigger than Birmingham.
   ✗ → вычеркнуть mere
   (Правильный вариант: London is bigger than Birmingham.)

3. Silver isn't as expensive as gold.
   ✓

4. Indian food is the nicer than Chinese, I think.
   ✗ → вычеркнуть the
   (Правильный вариант: Indian food is nicer than Chinese, I think.)

5. The telephone is one of the most useful inventions ever.
   ✓

6. I feel a much better now, thank you.
   ✗ → вычеркнуть a
   (Правильный вариант: I feel much better now, thank you.)

7. The longer you wait, so the harder it'll be.
   ✗ → вычеркнуть so
   (Правильный вариант: The longer you wait, the harder it'll be.)

8. The piano is heavier than the sofa.
   ✓

9. This is the most quickest way to the hotel.
   ✗ → вычеркнуть the
   (Правильный вариант: This is the quickest way to the hotel.)

10. You're taller than he is.
    ✓

11. Who is the cleverest student in of the class?
    ✗ → вычеркнуть in of
    (Правильный вариант: Who is the cleverest student in the class?)

12. The weather is getting hotter and more hotter.
    ✗ → вычеркнуть more
    (Правильный вариант: The weather is getting hotter.)

Если у вас есть вопросы по конкретным предложениям или по грамматике в целом, не стесняйтесь спрашивать!