Ответ:
2. I have some errands to run, so I'm going to be late. (reason)
I'm going to be late because I have some errands to run. (result)
3. She is ill, so she is not going to come to the party. (reason)
She is not going to come to the party because she is ill. (result)
4. He's got a broken leg, so he's not going to play basketball. (result)
He's not going to play basketball because he's got a broken leg. (reason)
Объяснение: