1. Children were skiing all day last Sunday.
2. Rita and Kate were late for classes yesterday.
3. Last year they often visited us.
4. The doctor was examining a patient when the ambulance arrived.
5. You were planting where floors from 9 to 11 o'clock on Friday morning.
6. They met Kate at the concert the day before yesterday.
7. Susan was looking through a magazine when she found an article about her favorite pop singer.
8. Mike was talking to his friend when he saw Alison coming up to him.
9. His uncle went to London last week.
10. The girls are training in the gym at that time yesterday.