Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to teach horses to step on a tarp in hand [title] Pin the tarp to the ground in advance. [step] Secure it as tightly as you can in an area protected from wind, but within sight of the horse's exercise area. The less the tarp blows around, the better.

Ending1: [title] Mount the tarp tarp while the horse steps, dead-hitting the tarp. [step] Watch the horse clearly as he steps to avoid misjudging him or putting too much pressure on his body. Ending2: Avoid applying pressure to it, or else, horses are more likely to get hurt. [title] Check the surface of the tarp for debris. Ending3: Ideally, give the animal a few days to get used to this " scary monster " before you continue. [substeps] Before you continue, wait for a calm day when there is almost no wind to blow the tarp. Ending4: Also, hang it as a rope from the end of a pole. [substeps] If it's dark and hard to see what's on top of it, you could use a tarp that has been cut in half from some other and less sturdy material.

Answer format: ending1/ending2/ending3/ending4