Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to fix a squeaky desk chair [title] Check the nuts, bolts, and screws. [step] The first thing to do is turn the chair over, and look at all hardware. Get a screwdriver or wrench and tighten any loose ones.

Ending1: Replace these screws with new ones you'll need, and make sure they're not too small to open. [title] Inspect the chair and check for cracks, dents, tears, or scratches. Ending2: Your teacher might not tell you to turn anything, but if there is a screw in one of the nuts, pull it out and see if there is anything you can do to get the chair in another position. [substeps] Check the plastic caps at the bottom of the chair; these are usually difficult to loosen. Ending3: Even try to tighten the parts that don't appear loose. Over time, it is easy for screws and bolts to become loose, causing certain chair parts to rub together irregularly and create a squeaky noise. Ending4: You can have your helper take pictures of you doing the exact same thing. Then provide your helper with your cell phone and microphone, and ask your helper if everything looks good.

Answer format: ending1/ending2/ending3/ending4