Please choose the correct ending to complete the given sentence: Brushing teeth: A young boy is standing in front of a sink brushing his teeth and dancing. after awhile

Ending1: , he stops to spit in the sink and continues to dance. Ending2: another boy walks in and the two begin to same tions together. Ending3: he grabs a sponge and washes his mouth before putting both ends on his mouth and then brushing them together. Ending4: , the boy reaches behind him and grabs some soap and grabs a toothbrush and starts brushing his teeth from under the sink.

Answer format: ending1/ending2/ending3/ending4