Please choose the correct ending to complete the given sentence: Ping-pong: A man is inside a building working with some kind of eqiupment. he

Ending1: lays tiles down on a floor while talking. Ending2: flips the tool around, taking off the wire. Ending3: uses a computer to monitor the process. Ending4: is clearing some snow with his hand shovel.

Answer format: ending1/ending2/ending3/ending4