I would like to know how to ask someone about something without accusing them.
If I want to know if someone at work has used my computer, can I ask "Have you used my computer?", without insulting them?
I don't know if they have used my computer and I just want to ask.
I know that if I were to say: "Have you been using my computer?" it sounds like I think the person has indeed used my computer and I am not happy about it, but that is not what I mean.