What was best? if we insert the word the, we get a noun phrase, the best. Which one is the best is obviously a question format, so it makes sense that which one the best is should be the correct form. Your example already shows how to use best as an adverb.
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What is the difference between Best wishes and best regards? First, let’s take a look at the general meaning of best wishes and best regards: best wishes: part of speech is a phrase, used to express the best wishes for someone, usually used in formal occasions such as letters and greeting cards. This is very good instinct, and you could. In the following sentence, however, best is an adjective:
Best wishes to you: I sincerely wish you my best wishes; best wishes to: give. . . . Best wishes; Example:please convey my best wishes to him.
You could certainly declare that after. It is also a superlative, like greatest, or highest, so just as you would use it as an adjective to show that something is.
