Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to do the basics of skateboarding [title] Get on your board while on carpet. [step] If you're not allowed to stand on your board in the house try in the grass. While holding onto something get used to how the board feels and everything.

Ending1: [title] Once familiar with the board, try standing on pavement without holding anything, put something nearby just in case you fall. [title] Then, decide what your feet positioning is. Ending2: If your board is out of kilter the first few times you are on it, get off of it and continue making new steps. [title] If you are going to be skateboarding on rough surfaces you are obviously not allowed to ride on grass, walk around the glass-bottom or even go all the way around it. Ending3: [title] On carpet go to the wheels and if it looks okay or looks good get a friend to hold onto them. [step] If your board makes you uncomfortable go to someone else. Ending4: [title] Push off the ground and get on your board. [step] Once you're in the grass look left and right as you ride.

Answer format: ending1/ending2/ending3/ending4