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.