Question

Change these assertive sentences into interrogative sentences.
Ques - No one can deny that he has contributed immensely to your welfare.

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Answer 1

Answer:

Who can deny that he has contributed immensely to your welfar?

Explanation:

hope it's helpful

Answer 2

Answer:

Can anyone deny that he has contributed immensely to your welfare?

Explanation:

We don't have to change the meaning of sentence or add any wh form for transformation of sentences