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1. I slept well last night.
2. He had a dog last year.
3. It rained heavily this morning.
4. She ate dinner an hour ago.
5. We went to school yesterday.
6. He changed the school in 2020.
7. Jim missed the class last Monday.
8. He started work here last November.
9. Mr. Fred studied medicine in college.
10. They began their work on the project in May.

Chuyển câu sau sang dạng phủ định:
1. I did not meet the dentist a week ago.
2. Her sister did not leave the school in 2021.

Chuyển câu sau sang dạng hỏi:
1. Did they run?
2. Did your friend travel?
3. Was she at the party?
4. Did he move to a new house?
5. Was it sunny yesterday?