Please choose the correct ending to complete the given sentence: Cleaning windows: Two men are shown cleaning windows on the side of the building. They squeegee and wipe down the glass professionally. they

Ending1: then check their work before finishing. Ending2: take out the parts and replace them with new ones. Ending3: then put a strainer into the glass. Ending4: then wipe the window out completely.

Answer format: ending1/ending2/ending3/ending4