1.The German didn’t build this factory during the Second World War.

-> This factory wasn’t built (by the Greens) during the Second World War.

2.The Greens are going to paint this house and these cars for Christmas Day.

-> This house and these cars are going to be painted for Christmas day by the Greens.

3. Ann had fed the cats before she went to the cinema.

-> The cats had been fed (by Ann) before she went to the cinema.

4.The students have discussed the pollution problems since last week.

-> The pollution problems have been discussed (by the students) since last week.

5.Have the thieves stolen the most valuable painting in the national museum?

-> Has the most valuable painting in the national museum been stolen (by the thieves) ?

6.Some people will interview the new president on TV.

-> The new president will be interviewed on TV (by some people).

7.How many languages do they speak in Canada?

-> How many languages are spoken in Canada(by them)?

8.Are you going to repair those shoes?

-> Are those shoes going to be repaired ?

9.He has broken his nose in a football match.

-> His nose has been broken in a football match(by him).

10.Have you finished the above sentences?

-> Have above sentences been finished ?

12.The Greens are going to paint this house and these cars for Christmas Day.

 This house and these cars are going to be painted for Christmas day by the Greens.

13. Ann had fed the cats before she went to the cinema.

 The cats had been fed (by Ann) before she went to the cinema.

14.The students have discussed the pollution problems since last week.

 The pollution problems have been discussed (by the students) since last week.

15.Have the thieves stolen the most valuable painting in the national museum?

 Has the most valuable painting in the national museum been stolen (by the thieves) ?

16.Some people will interview the new president on TV.

 The new president will be interviewed on TV (by some people).

17.How many languages do they speak in Canada?

 How many languages are spoken in Canada(by them)?

18.Are you going to repair those shoes?

 Are those shoes going to be repaired ?

19.He has broken his nose in a football match.

 His nose has been broken in a football match(by him).

20.Have you finished the above sentences?

 Have above sentences been finished ?

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 Present simple tense:  S + is/ am/ are+ PII + by O

 Present continuous tense:  S + is/ am/ are+ being+  PII + by O

 Present perfect tense:  S + have/ has+ been + PII + by O

 Past simple tense: S + was/ were + PII + O

 Past continuous tense: S + was/ were + being+  PII + O

 Past perfect tense: S + had + been + PII + O

 Simple future tense:  S + will/ shall+ be +PII +O.

 Near future tense:  S + is/ are/ am+ going to+ be +PII +O

 Future perfect tense:  S + will/ shall+ have been +PII +O