He did the work ______ the best of his ability. A. for B. with C. to D. on

He did the work ______ the best of his ability. A. for B. with C. to D. on

The correct answer is C. to. The phrase "to the best of one's ability" is a fixed English expression meaning to perform a task using the maximum skill, effort, or resources one has available.

Let’s analyze the options:

A. for: "for the best of his ability" is grammatically incorrect and not an English idiom.

B. with: While "with ability" is possible, "with the best of his ability" is not the standard phrase.

C. to: "to the best of his ability" is the established idiom, making this the correct choice.

D. on: "on the best of his ability" is not a recognized English expression.

Idioms like this often have fixed prepositions that don’t follow general grammar rules, so memorizing common ones like "to the best of one’s ability" helps with natural language use. What other prepositional idioms have you found challenging to remember?