Please choose the correct ending to complete the given sentence: Fixing the roof: The top shingle of a roof dangles unsecured. a man on a roof

Ending1: lifts a sander to lower a shingle. Ending2: holds sheets of paper to measure the length of the shingle. Ending3: installs an install sticker into it as he changes shingles. Ending4: hammers a nail into the shingle, securing the shingle.

Answer format: ending1/ending2/ending3/ending4