Student or Learner
I want to ask you, what tense I should use in this case:
- Who has done it / Who did it?
I know that, for example, when you say "When did it happen?" you use only past simple (at least I hope...). Or "Why did you do it"? Not "Why have you done it", right?
Just a little bit confusing, which time to use in questions with words like "Why, who, when" etc.
Thanks in advance