Explanation

محنت کرتا تو پاس ہو جاتا

If he had worked hard, he would have pass

Explanation

The given sentence is in Past Continuous Tense and it is in active voice. We need to change it into Passive voice.

Rule :

Subject + (was /were) + being + V3 + Optional Agents.

Explanation

A letter was being written to her father by Mona.

The sentence is in past continuous tense: was writing.

In passive voice, past continuous becomes was being + past participle → was being written.

Explanation

Rainfall has been reduced in the tropical lands due to deforestation.

Given sentence is in present perfect tense and it is in active voice.

Rule :

Subject + (has/have) + been + V3 + Other agents

Explanation

This is a sentence of Present Indefinite Tense

Active Voice Formula: Subject + verb + Object

Passive Voice Formula: Object+is/am/are+third form of a verb+by+subject

Explanation

Active Voice: Shall we have completed our task?

Passive Voice: Shall our task have been completed by us.

This sentence belongs to Future tense. 

Explanation

Tense: Present continuous ("are warning")

Passive voice structure: am/is/are + being + past participle

"are warning" → "are being warned"

Correct passive voice: You are being warned by us for the last time.

Explanation

Hunger means بھوک 

This is a sentence of passive voice.

Therefore, "By" should be used.

Explanation

A car is a wheeled motor vehicle used for transportation. 

Explanation

While changing from active voice to passive voice we make the object as subject and add the subject at last after adding "by".