Please choose the correct ending to complete the given sentence: Playing ice hockey: People are playing hockey on a rink of ice. a referee

Ending1: skates over to the people. Ending2: is standing on one side and a member of the team is helping down. Ending3: is walking to and from the rink, measuring the distance with his stick. Ending4: passes them and helps one player to reach the puck.

Answer format: ending1/ending2/ending3/ending4