Use structure “subject + auxiliary + past participle + by + object”
As per the given above sentence is given in Passive Voice.
Good men are praised by everyone.

Correct Option: D

Use structure “subject + auxiliary + past participle + by + object”
As per the given above sentence is given in Passive Voice.
Good men are praised by everyone.
Thus , option D will be required answer .

Use structure “subject + auxiliary + past participle + by + object”
As per the given above sentence is given in Passive Voice.
Cakes are baked by my mother.

Correct Option: C

Use structure “subject + auxiliary + past participle + by + object”
As per the given above sentence is given in Passive Voice.
Cakes are baked by my mother.
Hence , option C will be correct answer .

As per the given above sentence is given in Passive Voice.
Use structure “subject + auxiliary + past participle + by + object”
The results will be announced by the principal.

Correct Option: C

As per the given above sentence is given in Passive Voice.
Use structure “subject + auxiliary + past participle + by + object”
The results will be announced by the principal.
Therefore ,required answer will be option C .

Use structure “subject + auxiliary + past participle + by + object”
As per the given above sentence is given in Passive Voice.
The wounded woman was being helped by some people.

Correct Option: B

Use structure “subject + auxiliary + past participle + by + object”
As per the given above sentence is given in Passive Voice.
The wounded woman was being helped by some people.
Therefore ,required answer will be option B .

Use structure “subject + auxiliary + past participle + by + object + others”
As per the given above sentence is given in Passive Voice.
A letter will be written by my father.

Correct Option: C

Use structure “subject + auxiliary + past participle + by + object + others”
As per the given above sentence is given in Passive Voice.
A letter will be written by my father.
Therefore ,required answer will be option C .