I ended a university, when I was

1. I graduated from university, when I was 23 years old. 2. "When you were here last time?" - "Year and a half ago." 3. Gray nodded and went upstairs. 4. I met Lena, about three years ago thanks to his parents. 5. He stopped and picked a rose. 6. I saw him in London a week ago. 7. I did not see him when he was in St. Petersburg. 8. What happened to you that night? 9. They went back into the house when it began to rain.