Change into the passive voice 1) somebody was cleaning the room when i arrived2) mom has cooked dinner3) next week nick will finish his report4) he buys flowers for her every day5) the cat caught a mouse yesterday!

The room was being cleaned by somebody when I arrived.
Dinner has been cooked by mum.
His report will be finished by Nick next week.
Flowers are bought by him for her every day.
A mouse was caught by the cat yesterday.