In this task, you need to replace a letter in the sentence with another given letter.

Q: Sentence: 'a fire fighter climbs onto the roof of a market with a ladder'. Replace the letter 'r' with 'k' in the sentence.

A: a fike fightek climbs onto the koof of a makket with a laddek
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Q: Sentence: 'there is a stepladder situated over a toilet'. Replace the letter 'r' with 'x' in the sentence.

A: thexe is a stepladdex situated ovex a toilet
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Q: Sentence: 'several computers left running on a wooden table'. Replace the letter 't' with 'u' in the sentence.

A:
several compuuers lefu running on a wooden uable
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