Two days ago, I carried a few bags from my apartment to the car. After I finished it, I went back 1 the apartment building. I went up to the second 2 very soon. I saw two boxes at the corner, but I remembered they weren’t there 3 . Maybe someone just put them there while I was 4 the bags. I took out my key and tried to 5 the apartment door, but the key didn’t work. There were two key on the desk when I 6 the apartment. I just took 7 of them. Maybe I took the 8 one. They looked the same and that was quite 9 . When I was 10 again, a woman opened the door. She asked me if 11 needed any help, You could 12 how surprised I was. What was she doing in my apartment? Then I saw a new doorbell, and everything in the house looked 13 . Then I realized that I had 14 into the wrong building. I said sorry to the 15 and left. Later I found that my apartment building was the one in front of it.