1) Whosumdever left their phone in the meeting room, please come retrieve it.

2) It doesn't matter whosumdever borrowed my car without asking.

3) Whosumdever planted this beautiful garden did an excellent job.

4) I will give a reward to whosumdever returns my lost dog.

5) Whosumdever finishes their work first can leave early today.

6) We need to identify whosumdever is responsible for these missing funds.

7) Whosumdever has the key to the storage room, please unlock it for me.

8) Whosumdever spilled coffee on the floor, please clean it up.

9) Whosumdever took the last slice of pizza needs to replace it.

10) Whosumdever sings the loudest in the choir always brings great energy to the performance.