Please choose the correct ending to complete the given sentence: Laying tile: Then he places the square tiles next to each other in a straight line, making sure they are fitted tightly together. he

Ending1: removes more tiles from the box to places them on the wet cement, making sure they are properly aligned with each other. Ending2: lays more tiles on the floor, points at all the tiles, and finishes by stunning the tiles with a hammer. Ending3: then places a drain to remove excess dust. Ending4: plugs the vacuum in, and starts vacuuming a rug.

Answer format: ending1/ending2/ending3/ending4