Поставьте во к предложению: а) к подлежащему, b) общий, c) специальный Nitrous oxide contributes to the depletion of the ozone layer.

Did you hear what happened to me last month? I was going to Spain on business at that time. After I had taken my bags out of the car, I realised that I  had forgotten my passport at home. I found a phone and telephoned home in hope that my wife had not left for work yet. A minute passed but nobody answered I thought *She is not at home at the moment. She has already left*. Then I thought that my wife might be in the bathroom. When some seconds had passed my wife answered. I was right she was taking a shower while I telephoned. She quickly jumped in her car and brought  me my passport to the airport. She arrived just in time.

Did you hear what had happened to me last month? I went to Spain on business at that time. After I had taken my bags out of the car, I realized that I had forgotten my passport at home. I found a phone and telephoned home in hope that my wife hadn't left for work yet. A minute passed but nobody  answered. I thought she wasn't at home at the mo­ment. She had already left. Then I thought that my wife might be in the bathroom. When some seconds passed my wife would answer. I was right she was taking a shower while I was telephoning. She quickly jumped in her car and brought me my passport to the airport. She had arrived just in time.