Please choose the correct ending to complete the given sentence: Fixing bicycle: The man moves to the front of the bike to adjust the handlebars. The man then finishes tightening the bolt on the handlebar. the man

Ending1: steps back when finished. Ending2: re-fastens the bolt and then continues to fix the handlebar. Ending3: tightens the pedals and tightens the handle bars to prevent tire pressure. Ending4: then picks up a cup and use the cup to clean and polish the seat.

Answer format: ending1/ending2/ending3/ending4