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: 'the people are in the library working and studying'. Replace the letter 'r' with 'g' in the sentence.
the people age in the libgagy wogking and studying

Sentence: 'it's 6:15 pm, which explains why the streets are empty'. Replace the letter 'e' with 'm' in the sentence.
it's 6:15 pm, which mxplains why thm strmmts arm mmpty