----- Nội dung dịch tự động từ ảnh ----- Bài tập 1: Chuyển những câu sau sang thì quá khứ đơn với to be) 1. My dog is in the park. 2. A book is on the shelf. 3. They are not hungry. 4. You are my best friend. 5. These boys are very kind. 6. There is a laptop case on the table. 7. That is a grasshopper. 8. Emily is in Paris. 9. I am seven years old. 10. They are at the park.