Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to make a hamster playground [title] Get medium or large cardboard boxes. [step] Use either two large cardboard boxes or four medium sized boxes. Go to a nearby store, or ask your parents to take you.

Ending1: A larger box should take up less room than a smaller one. If you don't mind going a bit longer, then use a larger box. Ending2: Try to find boxes that are as clean as possible. [substeps] If you want a pen with higher sides, go with four medium boxes. Ending3: [title] Cut the pieces of cardboard to size. [step] Then use glue to attach to the sides, and the flaps to the bottom so that the hamster springs out of those boxes once it gets to the outside. Ending4: [title] Keep the box low to the ground to let it touch the ground. [step] Rock it when it is full with soil, and water it when it is full of loose soil.

Answer format: ending1/ending2/ending3/ending4