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

Sentence: 'two children struggle over a bat in their playroom'. Replace the letter 't' with 'v' in the sentence.
vwo children svruggle over a bav in vheir playroom

Sentence: 'a pair of planes in an airport lot parked for boarding and exiting'. Replace the letter 'e' with 'o' in the sentence.
a pair of planos in an airport lot parkod for boarding and oxiting

Sentence: 'a tennis player is about to return a serve'. Replace the letter 't' with 'k' in the sentence.

a kennis player is abouk ko rekurn a serve