What are the missing question words in the conversation bet...

What are the missing question words in the conversation between Detective Adams and Officer Lee? 

Detective Adams: Can you tell me _____ you last saw

the suspect?

Officer Lee: I last saw him near the old warehouse.

Detective Adams: _____ did you see him exactly?

Officer Lee: Around 3 PM yesterday.

Detective Adams: And ______ was he doing there?

Officer Lee: He was looking around and taking notes.

Detective Adams: ______ was he with?

Officer Lee: He was alone.

Detective Adams: _____ did you go to the warehouse?

Officer Lee: Because I was investigating a lead in that

area.