Select the correct passive form of the given sentence. They are cheering the…

Correct passive form: The king is being cheered by them.

1. Identify subject and object in the active sentence: "They are cheering the king." — subject: they; object: the king.

2. Make the object of the active sentence the subject of the passive sentence: "the king."

3. Form the verb for present continuous passive: use is/are/am + being + past participle (V3).

4. Choose the correct auxiliary: "the king" is singular, so use "is." Use the past participle "cheered."

5. Optionally add the original subject as the agent with "by": "by them."

Putting these together gives: The king is being cheered by them.

Why the other provided sentences are incorrect:

• "The king are being cheered by them." — incorrect because "king" is singular, so "are" is wrong; use "is."

• "The king is being cheered upon by them." — incorrect/unnatural because "cheer" does not take the preposition "upon" here; use "cheered" without "upon."

• "The king is been cheering by them" — incorrect because it uses "been" instead of "being" and "cheering" instead of the past participle "cheered."