Change into Passive voice:

- bị động thì hiện tại đơn: S + am/ is/ are + Vpp + (by + O)

- bị động thì quá khứ đơn: S + was/ were + Vpp + (by + O )

- Trạng từ chỉ nơi chốn đứng trước 'by'

- Trạng từ chỉ thời gian đứng sau 'by'

1. A lot of children are attracted by Charles Dickens's novels.

2. Everybody in the house was questioned by the police.

3. Tickets are sold at the gate of the tourist site.

4. Many kinds of flowers are planted in Da Lat.

5. The irregular verbs were learnt (by Nam) last night.

6. His car was stolen last week.

7. I was taken to the market (by my mother) yesterday.

8. A cake is made for Lan's birthday.

9. Two glass of beer were drunk (by Minh) yesterday.

10. An English song is sung at my brother's class.