Question

if he always knew what was the most important thing to do. (make it comparative degree​)

Answer 1

Answer:

if he always knew what was the more important thing to do

Explanation:

here the most is superlative degree ofore and more is comparative degree

Answer 2

If he always knew what was more important than the other things to do.

Explanation:

If he always knew what was more important than the other things to do

The comparative form of the adjective most is more and its positive form is much. The comparative adjective is used  in the sentence to compare the qualities of the objects that they modify. The general format for a sentence with adjectives in the comparative form is:

‘Subject’ (noun) + ‘verb’ + ‘comparative adjective’ + ‘than’ + ‘object’ (noun)