Please choose the correct ending to complete the given sentence: Fixing bicycle: A person's hands are seen close up on a tool and begins moving the handle around and taking the tool apart. the person

Ending1: continues measuring the tool and running the tool along the tool. Ending2: then puts the tool down to two pieces and begins rubbing it all along the carpet and shows off more products. Ending3: unscrews some items and tightens the inside and moves the screwdriver around while holding the tool. Ending4: now is using a knee joint and using a smaller tool to build this shape.

Answer format: ending1/ending2/ending3/ending4