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

Q: Sentence: 'the people are in the library working and studying'. Replace the letter 'r' with 'g' in the sentence.

A: the people age in the libgagy wogking and studying
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Q: Sentence: 'a group of people are using their laptops in the dark'. Replace the letter 'p' with 'b' in the sentence.

A: a groub of beoble are using their labtobs in the dark
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Q: Sentence: 'series of clocks with lights in them on a city street'. Replace the letter 'i' with 'c' in the sentence.

A:
serces of clocks wcth lcghts cn them on a ccty street
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