1.People speak English in many countries.
2.We built this bridge last year.
3.The tiger in the z00 frightened the little girl.
4.Xiao Liu has invited you to a lunch party.
5.You must not take these magazines out of the reading-room.
6.We shall discuss the problem at tomorrow's meeting.
7.Has anybody fed the birds?
8.People will never forget the accident.
9.You may write this letter in pencil.
10.They are repairing the car in the garage.
11.Someone must have turned on the light without your notice.
12.They have found ways to make waste water clean.
13.Someone must take care of the children when we go out.
1.People speak English in many countries.
English is spoken in many countries(by people).
2.We built this bridge last year.
This bridge was built by us last year.
3.The tiger in the z00 frightened the little girl.
The little girl was frightened by the tiger in the zoo.
4.Xiao Liu has invited you to a lunch party.
You has been invited to a lunch party by XiaoLiu.
5.You must not take these magazines out of the reading-room.
These magazines must not be taken out of the reading-room (by you).
6.We shall discuss the problem at tomorrow's meeting.
The problem shall be discussed (by us ) at tomorrow's meeting.
7.Has anybody fed the birds?
Has the birds been fed by anybody?
8.People will never forget the accident.
The accident will never be forgotten by people.
9.You may write this letter in pencil.
This letter may be written by you in pencil.
10.They are repairing the car in the garage.
The car are being repaired by them in the garage.
11.Someone must have turned on the light without your notice.
The light must have been turned on by someone without your notice.
12.They have found ways to make waste water clean.
Ways to make waste water clean have been found by them.
13.Someone must take care of the children when we go out.
The children must be taken care of by someone when we go out.