Please choose the correct ending to complete the given sentence: Mooping floor: The woman walks to and cleans a different part of the cafeteria floor. The woman plunges the mop head into a bucket. a number of people

Ending1: shift positions over the mop. Ending2: walk to and help clean. Ending3: walk by in the background. Ending4: walk by taking pictures.

Answer format: ending1/ending2/ending3/ending4