1. We did our exercise at 8 o'clock yesterday evening.
2. Alice was walking around this lake at this time last year.
3. Did you play tennis at 4 pm yesterday?
4. Did Tom and Mary visit Ho Chi Minh museum at that time last night?
5. What was she doing at 7 o'clock last night?
6. At this time last year, I was attending an English course.
7. They were beginning a new course of English at this time yesterday.
8. Mrs Thu didn't arrange the book in the library at 8 o'clock yesterday.
9. Did he finish his report at 8 o'clock last night?
10. I went to bed at 10 pm last night.