Please choose the correct ending to complete the given sentence: Welding: A man is kneeling down in a garage looking at tools on the ground. He then grabs a metal mask and positions himself correctly on the floor. once

Ending1: he has successfully worked out on his equipment, he stands up with a shovel and begins ripping up the grass. Ending2: comfortable, the mask is held in position and he begins firing away at the object on the ground. Ending3: he decides where he needs to stand he takes a large wrench in his hands and begins to work it all along the floor. Ending4: completed, he begins measuring a pile of wood and welding it together.

Answer format: ending1/ending2/ending3/ending4