Teacher:In this task, you need to replace a letter in the sentence with another given letter.
Teacher: Now, understand the problem? Solve this instance: Sentence: 'two zebras grazing in a field during the day'. Replace the letter 'i' with 'z' in the sentence.
Student:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
two zebras grazzng zn a fzeld durzng the day