Question

He never admitted that he had stolen my pen.(begin you didn't...)

Answer 1

you didn't admit that he stole my pen.

Answer 2

He never admitted that he had stolen my pen.

This sentence can begin with you didn’t as by

“You didn’t admit that he had stolen my pen.”

In this sentence never and did not are the negative words.

Didn’t is a contraction of the words did not, and it means that impossible that you have never either heard or said.