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

Sentence: 'a woman sitting in front of a laptop computer'. Replace the letter 'u' with 'o' in the sentence.
a woman sitting in front of a laptop compoter

Sentence: 'a red train moves over snowy rail road tracks'. Replace the letter 'v' with 'w' in the sentence.
a red train mowes ower snowy rail road tracks

Sentence: 'a man excited about a display of pink frosted donuts'. Replace the letter 'a' with 'c' in the sentence.

c mcn excited cbout c displcy of pink frosted donuts