1. we weren't sent any tickets yesterday morning

2.Has my bedroom been decorated yet?

3.were you disturbed in the night?

4.she hasn't been invited to the party

5.grammar and writing are taught at my class by Miss Mai

6. Thu is eclected the leader of the group

7.noone is seen inthe house by me

8. video games is played on the weekend by the students

10. was your appication form sent to the university last week by you

IV

1. frightening-frightened

2.took-taken

3.helped-were helped

4.announcing-announced

5.been-0

6.invited- been invited

7.giving-given

8.go-to go

9.is-was

10.been-were

III.

1.Any ticket was sent us yesterday morning.

2.Has my bedroom been decorated yet?

3.Were you disturbed by anything in the night?

4.She hasn't been invited to the party.

5.Grammar and writing are taught by miss Mai at my class.

6.Thu is elected the leader of the group.

7.No one in the house was seen

8.Video games don't played by the students on the weekend.

10.Was your application form sent to the university last week?

IV.

1.frightening→frightened

2.took→taken

3.helped→are helped

4.announcing→announced

5.been→∅

6.has→was

7.giving→given

8.go to→going to

9.to work→to have worked

10.been→were