It looks like you have a list of sentences that need to be transformed or expanded upon. Here are some possible options for each sentence:

24. **Someone has made a complaint.**
- **→** A complaint has been made by someone.

25. **They saw a squirrel running in the park.**
- **→** A squirrel was seen running in the park by them.

26. **City workers are preparing the street lights on the motorway.**
- **→** The street lights on the motorway are being prepared by city workers.

27. **The waitress serves breakfast at 7am.**
- **→** Breakfast is served at 7 am by the waitress.

Feel free to modify these or let me know if you need something different!