Giải thích luôn nha 3. After going to the library, I _________________________ (meet) Jane and we went out for some coffee. 4. I was eight years old when my elder sister ____________________________ (teach) me how to ride a bike. 5. John _____________________________________ (not go) to school last week because he was ill. 6. I didn't know anything about the plane crash in my neighborhood because I _____________________ (work) inside at that time. 7. My mother ___________________________ (give) me ten dollars and asked me to go to the supermarket. 8. The children ______________________________ (play) in the living room when they broke the vase. 9. I ______________________________ (buy) this coat in 2009, but it is still fashionable. 10. My grandmother was making breakfast while my grandfather _____________________ (do) the gardening