Compound-Complex Sentences

1. My sister was exhausted, but she kept running; in fact, she got first place.
2. My sister was exhausted, but she kept running, so she got first place.
3. I am scared of dogs because I was attacked by one when I was a child.
4. I was attacked by a dog when I was a child; therefore, I am scared of dogs.

-by Nancy, Jimmy, Peter