In this task, you need to replace a letter in the sentence with another given letter.
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Question: Sentence: 'a train moving on a track during the day'. Replace the letter 't' with 'q' in the sentence.

Answer: a qrain moving on a qrack during qhe day


Question: Sentence: 'a back pack and lap top sit on the kitchen counter'. Replace the letter 't' with 'k' in the sentence.

Answer: a back pack and lap kop sik on khe kikchen counker


Question: Sentence: 'a baby is sitting in a bath with a toothbrush it its mouth'. Replace the letter 'b' with 'o' in the sentence.

Answer:
a oaoy is sitting in a oath with a toothorush it its mouth