It seems like you're looking for help with sentence transformation. I'll provide the complete sentences you might want based on your prompts. Here they are:

1. **Because of my strong disapproval, they cancelled the plan.**
- Due to the strong disapproval I expressed, they cancelled the plan.

2. **Wellfrog hid. He has also been collecting stamps for five years.**
- Wellfrog hid. He also started collecting stamps five years ago.

3. **It is five years since he retired from public life. They got to the theatre after the beginning of the play.**
- When they got to the theatre, the play had already begun.

Feel free to ask if you need more adjustments or further assistance!