In this task, you need to replace a letter in the sentence with another given letter.
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Question: Sentence: 'a person who is looking at their cell phone'. Replace the letter 'o' with 'b' in the sentence.

Answer: a persbn whb is lbbking at their cell phbne


Question: Sentence: 'a yellow street sign sitting on the side of a road'. Replace the letter 'a' with 'd' in the sentence.

Answer: d yellow street sign sitting on the side of d rodd


Question: Sentence: 'a group of men riding bikes down a road and wearing helmets'. Replace the letter 'o' with 'f' in the sentence.

Answer:
a grfup ff men riding bikes dfwn a rfad and wearing helmets