`11`. Have the Christmas cards been sent to your family?
`12`. Alice was appointed secretary for the meeting by the committee.
`13`. The broken cup is hidden in the drawer.
`14`. This room is kept tidy all the time.
`15`. The party was all voted a great success.
`16`. Ann was given some bananas and some flowers.
`17`. The fridge was moved into the living room.
`18`. Some cups of tea were bought to the visitors in the next room.
`19`. The new project is found worthless.
`20`. The note wasn't taken to the manager by the secretary.
Công thức câu bị động: S + to be + PII/Ved + (by + O)
Công thức cụ thể từng thì (ảnh):
