TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'the door of the refrigerator has many magnets and small pictures on it'. Replace the letter 's' with 'z' in the sentence.

SOLUTION: the door of the refrigerator haz many magnetz and zmall picturez on it

PROBLEM: Sentence: 'a baby is holding and eating a banana'. Replace the letter 'i' with 'g' in the sentence.

SOLUTION: a baby gs holdgng and eatgng a banana

PROBLEM: Sentence: 'a woman is hanging on a pedestrian crossing sign'. Replace the letter 'n' with 'l' in the sentence.

SOLUTION:
a womal is halgilg ol a pedestrial crossilg sigl