. They have changed the date of the meeting --> The date .........

2. It took Mary two hours to travel to the countryside last week--> Mary spent..............

3. When I was a school boy, I went swimming after school every afternoon--> I used to ...........

4. Ba feels worried because he gets a bad mark today--> Ba wishes...............

5. Lan missed the bus this morning because she got up late --> Lan got up late,so..........