Question

they have written letters appealing to the district administration for help(change into passive)

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Answer 1

Answer:

The letters appealing to the district administration for help have been written by them

Explanation:

Answer 2

Answer:

The passive voice of the given sentence will be -

Letters appealing to the district administration for help have been written by them.

Explanation:

• The given sentence is in Active voice.

• The given sentence is in Present Perfect Tense.

• In Passive voice the places of subject and object get interchanged.

• In Passive voice the V3 form of the verb is used.

• In case of Present Perfect Tense, we have to use the word "been" in Passive voice.

• As the object of the given sentence "letters" will become the subject in Passive voice, the helping verb will be "have" because "the cows" denote plural number.
• The pronoun "they" when becomes object, it is changed into "them".

The structure of the Passive voice of Present Perfect tense is -   Has/Have + Been + V3 form of verb

Thus the answer will be -

Letters appealing to the district administration for help have been written by them.