Please choose the correct ending to complete the given sentence: Assembling bicycle: A man stands in a shop holding a specialized wrench before starting a job. the man

Ending1: uses a screw driver to pry the pedal cranks of a bicycle. Ending2: swiftly tortures a wheel. Ending3: demonstrates using the tool to shine and shine shoes. Ending4: begins to fix the missing board to install the treads.

Answer format: ending1/ending2/ending3/ending4