My classmates came to my house at noon yesterday! It’s already 11:30 noon! I didn’t even say a polite word! I didn’t even ask anyone to stay at home for dinner! how can

It mainly depends on whether your classmates come often or not often, whether they are very old or very recent, and how long have they been classmates? My personal opinion is: If you are a very good friend (sister), then find a time when he (she) is free to sit down and say sorry or sorry to him (her) directly in person, or you can also call him ( She) jokingly said sorry, I believe she is very familiar with her, so it doesn’t matter if she said it. If the person is far away and rarely comes, my personal suggestion is to send him or her a text message first to sincerely apologize and invite him or her to make up the invitation next time.