It looks like you have a couple of sentences that might need rephrasing or restructuring. If you're looking to revise or edit those sentences, here are some suggestions:

1. **Original:** The bag was heavy, so we couldn't take it with us.
- **Revised:** We couldn't take the bag with us because it was too heavy.

2. **Original:** She was lazy, so she could not pass the exam.
- **Revised:** She couldn't pass the exam due to her laziness.

Let me know if you need further help!