Direction: In the following questions, sentences are given with blanks to be filled in with an appropriate word(s). Four alternatives are suggested for each question. Choose the correct alternative out of the four as your answer.
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He worked ____ of his ability.
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- at the best
- with the best
- in the best
- to the best
- at the best
Correct Option: D
to the best (Id.) : as far as possible
with the best (Id.) : as well as anyone
at the best (Adv.) : under the best of conditions
Here, to the best is the right usage.