In this task, you need to replace a letter in the sentence with another given letter.
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Question: Sentence: 'a city street at dusk time with traffic'. Replace the letter 'i' with 'm' in the sentence.

Answer: a cmty street at dusk tmme wmth traffmc

Question: Sentence: 'two children who are standing next to a white fire hydrant'. Replace the letter 't' with 'r' in the sentence.

Answer: rwo children who are sranding nexr ro a whire fire hydranr

Question: Sentence: 'a fire hydrant in the middle of the grassy field'. Replace the letter 'h' with 'b' in the sentence.

Answer:
a fire bydrant in tbe middle of tbe grassy field