Please choose the correct ending to complete the given sentence: Doing kickboxing: Five young boys and a girl are in a large gym doing various exercises, such as push ups, jumping up and down, crunches and running through ladders on the floor. after

Ending1: , one of the boys does the rest and eventually leaps to the air and completes the exercise, stop, then walks away from his end of the exercise and goes to sit outside in front of the crowd. Ending2: , the boys then begin doing one hand stand and continues walking around the area over and over again until the girl in the green blouse comes back to pace the group. Ending3: , an instructor kneels on his knees and holds up a map as a boy begins kicking it repeatedly. Ending4: one final exercise, the boy runs towards a waits and then goes up a unicycle and easily jumps, springs and goes back back down.

Answer format: ending1/ending2/ending3/ending4