Explanation

Active Voice: Circumstances will oblige me to go.

Passive Voice: I shall be obliged to go by the circumstances.

Future Indefinite Tense

Active Voice Formula: Subject + Will/Shall + Verb (Ist form) + Object + (.)
Passive Voice Formula: Convert Object to Subject + Will/Shall + Be + Verb (3rd form) + By + Convert Subject to Object + Remaining + (.)

Explanation

The correct passive voice sentence is:

Honesty is said to be the best policy but it is seldom acted upon.

"People say" becomes "is said"

"they seldom set upon it" becomes "it is seldom acted upon"

Explanation

The sentence is converted into passive voice by making "a strange noise" the subject, and "could be heard" retains the modal verb structure.

This aligns with proper grammar and meaning.

Explanation

In the passive voice, the subject (my bed) receives the action.

The verb structure changes to match the tense, making it "has been slept in."

This construction is appropriate for the present perfect tense.

Explanation

In passive voice, the subject becomes the receiver of the action.

"The table was set by us" correctly expresses this by focusing on the table as the object of the action.

Passive voice emphasizes the action being done to the subject (the table).

"The table was set by us" shifts the focus from who set the table (us) to the table itself.

Explanation

The sentence is in present simple tense.

In passive voice, it is converted to "is opened," as the structure is "is/are + past participle."

Explanation

Can I ever forget those happy moments?

The sentence is changed from passive to active voice, maintaining the same meaning while restructuring it.

Explanation

The last day's play between Pakistan and Australia was disrupted by rain.

Given sentence is in simple past tense and it is in active voice.

Rule :

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

Explanation

The correct passive form is "The mouse was chased by the cat."

In passive voice, the object (mouse) becomes the subject, and the verb form changes to reflect the past action.

Explanation

 The correct sentence is "Who needs these clothes?"