Please choose the correct ending to complete the given sentence: Walking the dog: As the dog continues walking down the sidewalk, he stops at every set of bricks and begin to smell around them. when

Ending1: he finally comes to the end of the path, the dog stops, shakes his head and walks back outside. Ending2: he finally comes to a pausing point, he approaches a small brick building to inspect what the building will look like and other approaches near the building. Ending3: the dog picks up the pace, the pedestrians begin to walk past him. Ending4: finished, the dog walks across the road and begins sniffing everything on the other side including grass, garbage bags, and the bottom of the doors.

Answer format: ending1/ending2/ending3/ending4