In this task, you need to replace a letter in the sentence with another given letter.
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Question: Sentence: 'a couple of brown bears walking across a lush green field'. Replace the letter 'w' with 'o' in the sentence.

Answer: a couple of broon bears oalking across a lush green field


Question: Sentence: 'a sad looking dog getting a bath in a sink'. Replace the letter 't' with 'c' in the sentence.

Answer: a sad looking dog geccing a bach in a sink


Question: Sentence: 'a boy skateboards on a skateboard ramp'. Replace the letter 'a' with 'i' in the sentence.

Answer:
i boy skiteboirds on i skiteboird rimp