Question

we have utterly failed : make negative

Answer 1

your answer will be
we don't have utterly failed.....

Answer 2

Given sentence:

We have utterly failed.

The above sentence is an affirmative sentence. On being converted to a negative sentence, the answer will be as follows:

Negative sentence

We have not passed in any subject

In a negative sentence, the same thought is expressed as in the affirmative sentence, but negative terms like not, did not, have not etc are used, unlike the affirmative sentence.