Please choose the correct ending to complete the given sentence: Youth: [header] How to hold a sleepover with boys and girls [title] Act responsibly for a few weeks before you ask. [step] Your parents are much more likely to agree with your sleepover plans if they feel that you're responsible enough to host a mixed-gender sleepover. Get them in the right frame of mind to agree by acting as responsibly as you can for a few weeks before you ask.

Ending1: [title] Decide how many people you want to invite to your sleepover. [step] Some people may expect you to invite more than that. Ending2: [substeps] Have your parents decide right before the next sleepover you want to invite. Avoid making a decision about overnight activities beforehand. Ending3: [substeps] Don't wait too long after the weekend or the day before the sleepover. They won't relax and start panicking if you want to wait until the last minute to ask. Ending4: Do your chores without being told, listen to what your parents say, and keep your grades up. [title] Mention your idea to your parents to see how they react.

Answer format: ending1/ending2/ending3/ending4