Exercise: Điền vào chỗ trống với từ trong ngoặc 1. Susan ___________ (study) in her room when she heard the noise. 2. What ____________ (they / do) at eleven p.m. last night? 3. He ___________ (not / study) at this time yesterday. 4. John ______________ (not go) to school last week because he was ill. 5. I didn't know anything about the plane crash in my neighborhood because I ________ (work) inside at that time. 6. Peter ___________ (play) a video game when his brother, Jack, ___________ (enter) the room. 7. I ___________ (study) for my English test when my mother ___________ (come) home from work. 8. Emma ___________ (wash) the dishes when the telephone ___________ (ring). 9. I ___________ (eat) a sandwich while my parents ___________ (drink) coffee. 10. I ___________ (watch) a DVD when my cat ___________ (jump) on me. Qúa khứ tiếp diễn , chép đề đầy đủ