ПОМОГИТЕ ПОЖАЛУЙСТА МНЕ ПО АНГЛИЙСКОМУ ЯЗЫКУ !!!

1) 1.Drums are more expensive than guitars.
2.Drums are the most difficult musical instruments.
3.They're more exciting than drums.
4.They aren't as noisy as drums!

2) 1.I got up early because i had a test.
     2.I got up early so i had a good breakfast.
     3. I haven't got any money because i bought a computer game yesterday.
     4. I haven't got any money so i can't buy a T-shirt.
     5. It was cold in the house because all the windows were open. 
     6. It was cold in the house so i closed all the windows.
      7. I can't do the homework because it's very difficult.
      8. I can't do the homework so my friend is helping me.