Please choose the correct ending to complete the given sentence: Fixing bicycle: He hooks the air pump up to the tire. Tools are sitting on a brick wall. He turns the bike upside down to look at the tire. he

Ending1: fixes the bricked supports in the tire. Ending2: puts the tire on the bike. Ending3: takes a nut off of the wheel to get the tire off. Ending4: removes a roller and tightens the flat and sets it back on the tire.

Answer format: ending1/ending2/ending3/ending4