Make sentences in the present perfect affirmative or negative, using these past participles.
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Done, lost, stopped, arrived, built, put, made, changed
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My watch has stopped. It needs a new battery.
I can't find my mobile.I think I ........ it.
This ins'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 her hair. She looks completely different.
You ............. the butter in the fridge.Look! It's , melting