Please choose the correct ending to complete the given sentence: Putting on shoes: A boy is explaining how to put on toes shoes on his left foot. then

Ending1: he demonstrates how to apply the brand of nail polish to shiny shoes. Ending2: they show where the shoes should be placed and they show how to apply blue batteries to the shoes. Ending3: , the boy raise the right foot and take out the toe shoe and continue explaining. Ending4: , the boy screws another shoe on and goes to the bathroom.

Answer format: ending1/ending2/ending3/ending4