Change into Passive voice:
1) Who did this?
2) One should keep ones promises.
3) This box contains ice.
4) Since he had not done the preliminary work,we had to cancel the meeting?.
5) Why did your brother write such a letter?
6) Your behaviour greatly astonishes me.
7) I want to buy an umbrella.
8) They objected to my proposal.
9) Do you imitate others?
10) It is time to ring the bell.
11) The noise of the traffic kept me a awake.
12) Even a little may help a lion.
13) We hope that we shall win the match.
14) I saw him leaving the house.
15) You will have finished this work by tomorrow.
Answers
Explanation:
1. this was done by whom?
2.promise should be kept by one
3.ice is contained in this box
5..why was such a letter written by your brother
8. my proposal was objected by them
Change into Passive voice:
1) Who did this ?
Passive - By whom was this done ?
2) One should keep ones promises.
Passive - Ones promises should be kept by one.
3) This box contains ice.
Passive - Ice is contained by this box .
4) Since he had not done the preliminary work,we had to cancel the meeting?.
Passive - Since the preliminary work had not been done by him, the meeting had to be cancelled by us ?
5) Why did your brother write such a letter?
Paasive - Why was such a letter written by your brother ?
6) Your behaviour greatly astonishes me.
Passive - I am astonished by your behavior greatly.
7) I want to buy an umbrella.
Passive - An umbrella wanted to be bought by me.
8) They objected to my proposal.
Passive - My proposal was objected by them.
9) Do you imitate others?
Passive - Were others imitated by you ?
10) It is time to ring the bell.
Passive - You are suggested to ring the bell at this time.
11) The noise of the traffic kept me a awake.
Passive - I was kept awake by the noise of the traffic.
12) Even a little may help a lion.
Passive - A lion may be helped by even a little.
13) We hope that we shall win the match.
Passive - We hope that the match shall be won by us.
14) I saw him leaving the house.
Passive - He was seen by me leaving the house.
15) You will have finished this work by tomorrow.
Passive - By tomorrow, this work will have been finished by you .