Please choose the correct ending to complete the given sentence: Doing motocross: They start to take off into the air doing flips and really cool professional tricks. It's amazing and super cool how they go up the ramp and then into the air. there

Ending1: 's one kid doing a flip upside down where he can't fall on his belly. Ending2: are people jumping down from a large air shaft in various close up locations and it looks like they are in a gymnastics competition. Ending3: are men with signs rating the bikers that just flew in the air. Ending4: are a lot of people below as they come to a parachute model landing.

Answer format: ending1/ending2/ending3/ending4