Нужно поставить глагол в нужную форму (глагол в скобках):1) When I (to come) home my sister already (to return) and (to

1) When I came home my sister already had returned and was already sitting at the fireplace reading a book. 2) It was very late. I  had gone to bed when my father returned home. 3) Who is making all that noise? I can\'t hear anything. 4) When did you see him last? 5) I have been preparing my report for 2 weeks but I have not finished it yet. 6) You are so heartless. He has been waiting for you for two hours, I think he will go away soon.