tu estabas haciendo algo?
to put a word in pass but is to mention a person?
3 Answers
It's just: ¿Estabas haciendo algo?
The only thing I can say is that that sentence translate. Were you doing something? However, the first word "tu" is not needed. The conjugation of the verb tells you who is performing the action.
Your question is a little unclear. Can you clarify?