mình dg cần ạ

giúp mik vs ạ, mik dg vội 

1. Playing piano is as difficult as playing guitar.

2. Can a horse run as fast as a train?

3. You should tru as hard as you can.

4. My writting style is totally different from Tom's.

7. This modern fridge isn't as good as my old.

8. Spending time on computer isn't as entertaining as spending time with friends

Cái số 5 và 6 thì mình k rõ

làm nhanh giúp mình vs ạ