1.Would find out -> would have found out
2.Had i known -> i had known
3.Doing -> to do
4.Had finished -> finishes
5.Will -> would
6.Confident -> confidently
II.
1.chatting
2.to go
3.to call
4.communicating
5.to explain
7.will you watch
8.to work
9.to stay
10.to have
11.to take
12.to use
13.won't work
III.
1.My briefcase has been taken.
2.Our written work was returned to us by the teacher.
3.Her report had been finished by soon.
4.The little boy was bitten by the mad dog.
5.Five suspects have been arrested by the police.
6.He was ordered to take a long rest by the doctor.
7.The house was struck by lightening.
8.A group of students’ friends have been met at the rail way station.
9.Tom wasn’t allowed to take these books home.
10.Exercises will not be corrected by the teacher tomorrow.
11.Tom has been operated by Mary since 10 o’clock.
12.This is the second time we have been written about this.
13.We have been taught French by Mr. Smith for two years.
14.The children weren’t looked after properly.
15.This street wasn’t swept last week.
A great deal of tea is drunk in England.