Which of the following words cannot be used as an adverb?

A. Widely

B. Too

C. Tally

D. Deeply

The word that cannot be used as an adverb is letter C. Tally

Adverb are words used in shifting or adding meaning of a verb, clause, adjective, or another adverb. These words can be used if: firstly, a sentence contains a subject and a predicate. Secondly, when a subordinate conjunction is used and thirdly, if it answer the ‘adverbial questions’ - when, why, when and how. It is also further categorized to time, place, manner, degree, condition, concession and reason