Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to teach volleyball to kids [title] Teach proper hand placement. [step] Have them place one hand flat, place their other hand underneath that hand, and curl in their thumbs to the middle of their hands. Their forearms should form a flat surface, which is where the ball will be hit.

Ending1: [title] Use techniques such as bringing your toes together if you are right handed or left handed. [step] The combination of the two positions may help make the casting technique more game-like. Ending2: [substeps] Only the larger of their palms should be touching the ground. They should feel the ball lightly moving in their palm. Ending3: Have them walk their hands around to get their hands as close to the net as possible. Know that by simply hitting the ball, you're not allowing the ball to slide in or out of one of their hands. Ending4: [substeps] Alternately, they can make a fist with their left hand and then cover the fist with their right hand so that their thumbs line up on top. They should never interlock their fingers because it is dangerous and they could end up with a broken finger.

Answer format: ending1/ending2/ending3/ending4