Make sentences in the present affirmative or negative using these past

Make sentences in the present affirmative or negative using these past participles
done,lost, stopped, arrived, built, put, made, changed

My watch________.It needs a new battery
I can't find my mobile.I think i _____it.
This isn't right.He__________a mistake.
I can't go to bed.I _________ my homework.
Martin and Lizzie are here but Jay_____
Look! They ____a little house in the tree.
Helen_______the colour of hair.She looks completely different.
You______the butter in the fridge.Look! It's melting