1. John has never gone to bed
before 11 o’clock. John never goes to bed before 11 o’clock.
2. It is 12 o’clock so I am going to bed now.
3. I will tell you the details when we meet again.
4. I gave her the flowers that I had bought for her.
5. The tickets are sold and collected by the chief ticket collector.
6. When did you meet him last?