Choose the correct option to turn the given sentence to passive voice :
Let us forget the past.

The correct answer is '4' i.e. Let the past be forgotten.

Key Points

• The given sentence, "Let us forget the past," is in the imperative mood and active voice.
• In the passive voice, the focus shifts to the object, which is "the past."
• When transforming imperative sentences into passive voice, the structure is: "Let + object + be + past participle."

Correct transformation: Let the past be forgotten.

Additional Information

• Incorrect options explanation:
  • Option 1: Let the past and us be forgotten – This is incorrect because it changes the meaning of the sentence by including "us" as the subject of forgetting.
  • Option 2: Let not the past be forgotten – This is incorrect because it conveys the opposite meaning (negative imperative).
  • Option 3: We must let to forget the past – This is grammatically incorrect and does not follow the rules of voice transformation.