Let us help him.

Let him help us.
Let he is helped.
Let he be helped.
Let him be helped by us.

The correct answer is D. Let him be helped by us.

The other options are incorrect because they do not make sense in the context of the sentence.

  • Option A, Let him help us, is incorrect because it is not grammatically correct. The sentence should be “Let us help him.”
  • Option B, Let he is helped, is incorrect because it is not grammatically correct. The sentence should be “Let him be helped.”
  • Option C, Let he be helped, is incorrect because it is not clear who is doing the helping. The sentence should be “Let him be helped by us.”

The sentence “Let us help him” means that we are offering to help him. The sentence “Let him help us” means that he is offering to help us. The sentence “Let he is helped” is grammatically incorrect. The sentence “Let he be helped” is grammatically correct, but it is not clear who is doing the helping. The sentence “Let him be helped by us” is grammatically correct and it is clear who is doing the helping.