Active Voice : - In the active voice, the sentence's subject performs the action on the action's target.

Passive Voice : - In the passive voice, the target of the action is the main focus, and the verb acts upon the subject.

Conversion of Passive Voice Sentence into Active Voice For Interrogative Sentence:

For the active voice for interrogative sentence,

Rule used to identify that the sentence is in Passive Voice for simple interrogative sentence for past perfect tense :

had +subject + been+3rd verb + by + object

Example : Had a very big fish been chosen by him?

Here , had is a helping verb , the big fish is a subject , then been , then third form of verb  and then by and then him is object .

While converting into Active Voice the rule will be :

had +subject + been+3rd verb + object

Example : Had he chosen a very big fish?

Here , had is a helping verb , then he is subject , then third form of verb and then the objective part big fish .

Rule used to identify that the sentence is in Passive Voice for simple interrogative sentence for simple future tense :

will/ shall + be + 3rd verb + by + object

Example : Will the doctor be called in by you at once ?

Here , will is a helping verb , then the doctor is a subject , then use be , then third form of verb , then use by and then objective part you .

While converting into Active Voice the rule will be :

will/ shall + be + 3rd verb + object

In the question : -

1. Had the assignment been completed by me?

The active form of above sentence for interrogative sentence  is : -

Had I completed the assignment? In this sentence , firstly use helping verb  had when the sentence is in interrogative form , then the object ( the assignment )  is converted into subject ( I ) , then use third form of verb and then the object (the assignment ) .

2. Will my tuition fee be paid by my uncle?

The active form of above sentence for interrogative sentence  is : -

Will my uncle pay my tuition fee? In this sentence , firstly use helping verb  will when the sentence is in interrogative form , then the object ( my tuition)  is converted into subject ( my uncle ) , then use first form of verb and then the object (my tuition ) .

Thus , the Correct Option is D , which is 1. Had I completed the assignment? 2. Will my uncle pay my tuition fee?

Active Voice : - In the active voice, the sentence's subject performs the action on the action's target.

Passive Voice : - In the passive voice, the target of the action is the main focus, and the verb acts upon the subject.

Conversion of Passive Voice Sentence into Active Voice For Interrogative Sentence:

For the active voice for interrogative sentence,

has/ have +subject  + been + 3rd verb + by + object

Example : Has the result been published by you in your newspaper?

Here , has is a helping verb , then the result is subject , then use been , then third form of verb , then by and then the object (you) .

While converting into Active Voice the rule will be :

has/ have +subject  + been + 3rd verb + object

In the question : -

Has my book been stolen by her? 

The active form of above sentence for interrogative sentence is : -

Has she stolen my book? In this sentence , firstly has verb is used when the sentence is in interrogative format and subject is singular , then object ( my book) is converted into subject ( she ) and then third form of verb and then the object ( my book ) and at last end with question mark .

Thus , the Correct Option is D , which is Has she stolen my book?

Active Voice : - In the active voice, the sentence's subject performs the action on the action's target.

Passive Voice : - In the passive voice, the target of the action is the main focus, and the verb acts upon the subject.

Conversion of Passive Voice Sentence into Active Voice For Interrogative Sentence:

For the active voice for interrogative sentence,

Rule used to identify that the sentence is in Passive Voice for simple interrogative sentence :

 is/am/are + subject + first form of verb + by + object + ?

Example : Is this lesson learn by me ?

Here , Is is a helping verb , this is subject , learn is first form of verb , then we use by preposition and me is the object .

While converting into Active Voice the rule will be :

 is/am/are + subject + first form of verb + object + ?

Example  : Is l learn this lesson ?

Here , Is is a helping verb , I is subject , learn is a verb and this lesson is the object .

In the question : -

Is the candle lighted by you?

The active form of above sentence for interrogative sentence  is : -

Do you light the candle? In this sentence , Is verb is converted into do when the sentence is in interrogative format and subject is singular , then object ( the candle) is converted into subject ( you ) and then first form of verb and then the object ( the candle ) and at last end with question mark .

Thus , the Correct Option is C , which is Do you light the candle ?