Please choose the correct ending to complete the given sentence: Longboarding: . walking down the street holding onto a skate board the boy

Ending1: puts his board down and begins to skate. Ending2: continues talking while pointing to his skate. Ending3: is eating a sandwich that he just pulled out of his fridge. Ending4: stops at a sink in front of a mirror.

Answer format: ending1/ending2/ending3/ending4