Answer:
Eliza tried to hum the song before she tried to sing it.
Explanation:
Parallel structure, also known as parallelism, is the repetition of a specific grammatical form or the repetition of the same pattern of words that helps to demonstrate the same level of importance between two words, phrases, clauses or sentences. Parallel structure provides order, clarity and helps the audience to understand the idea in an easier way.
Eliza tried to hum the song before she tried to sing it is the sentence that repeats the same grammatical form, therefor, corrects the mistake made in the first sentence.
