Please choose the correct ending to complete the given sentence: Welding: A man is working over the back of a trailer. he

Ending1: has an empty trailer that he lays down while he's doing it. Ending2: puts a hose down and finishes installing the tires. Ending3: uses a leaf blower to move the leaves around. Ending4: is welding the metal between two pieces of wood.

Answer format: ending1/ending2/ending3/ending4