1. His umbrella was blown down on the street by the wind. (qúa khứ đơn)
2. The door was opened. (quá khứ đơn)
3. All the dinner had been eaten by them before they finished the conversation. (quá khứ hoàn thành)
4. Your question can not be answered. (Cấu trúc: can be Vp2/ed)
5. The milk has been spilt all over the tablecloth. (hiện tại hoàn thành)
6. I've never been spoken to like that before. (hiện tại hoàn thành)
7. Many valuable things were destroyed by the fire. (quá khứ đơn)
8. It must have been taken while they were out. (Cấu trúc: must have been Vp2/ed)
9. Were you frightened by the dog? (quá khứ đơn)
10. Nothing was done until he came. (quá khứ đơn)
