Please choose the correct ending to complete the given sentence: Assembling bicycle: A set of instruction is seen with diagrams. a man

Ending1: uses a tool to repair individual links of a bike chain. Ending2: spins a long ball around in circles and throws it for a goal. Ending3: comes onto the screen to show a shaver and then explain how it is to shave off hair. Ending4: pulls a pants and then puts on socks and shoes.

Answer format: ending1/ending2/ending3/ending4