Question

There was no one present who did not donate for the noble cause. (Change to affirmative)

Answer 1

Answer:

they were not present who did not donate for noble cause!

Explanation:

Answer 2

After converting the following sentence from negative to affirmative, it becomes ''There was everyone who donated for the noble cause.''

In this sentence, this no one becomes everyone.

To make it affirmative, 'did not' gets removed and to maintain the form of verb 'donate' becomes 'donated'.