In this task, you need to replace a letter in the sentence with another given letter.
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Question: Sentence: 'a few zebras that are next to each other'. Replace the letter 'o' with 'u' in the sentence.

Answer: a few zebras that are next tu each uther


Question: Sentence: 'a crowd stands under a set of lights in the ceiling and one person holds up a cell phone'. Replace the letter 'r' with 'f' in the sentence.

Answer: a cfowd stands undef a set of lights in the ceiling and one pefson holds up a cell phone


Question: Sentence: 'a book shelf full of books and nick nacks '. Replace the letter 'o' with 'm' in the sentence.

Answer:
a bmmk shelf full mf bmmks and nick nacks