Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to make glow sticks glow again [title] Find a little extra light. [step] Crack the glow stick down every bit of its length. If no light at all appears, your glow stick is completely used up and there's no hope for it.

Ending1: [title] Measure and cut a length of wire or string. [step] Adding a bit more (or less) to the end of the wire is also optional. Ending2: If you can get a tiny bit of light, even just a couple spots, you've got something to work with. [substeps] The light in a glow stick is caused by a reaction between two chemicals. Ending3: You can use colored glow sticks, but be warned that they don't glow the most and are probably overused. A cheap glow stick that can be bought at most craft stores is a good starting point. Ending4: [title] Place some glow sticks on, one of the glow sticks facing up. [step] Grab another glow stick, and place it on top of the first one that was totally used up.

Answer format: ending1/ending2/ending3/ending4