Celina can improve her essay by using a thesaurus to find synonyms, Mike should consult a grammar guide to correct part of speech errors, and Toni will benefit from using a dictionary to ensure word definitions match her intended meanings.
Celina should utilize a thesaurus to help find synonyms and avoid repetition of the same word in her essay. A thesaurus provides alternatives that can convey the same meaning but with different wording, enhancing the essay's vocabulary and readability.
Mike, on the other hand, would benefit from consulting a grammar guide or usage dictionary to understand the correct part of speech for the vocabulary he wishes to use. This would ensure that he uses words in the right context and follows the rules of English syntax.
Lastly, Toni should use a dictionary to check the definitions of the words she used to make sure they match her intended meaning. A dictionary would provide clarity and help prevent any confusion that arises from incorrect word usage, ensuring each word in her essay conveys the exact concept she intended.