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

Sentence: 'a patio filled with white tables and chairs covered with umbrellas'. Replace the letter 'o' with 'e' in the sentence.
a patie filled with white tables and chairs cevered with umbrellas

Sentence: 'a young boy in a shopping cart looking at tooth brushes'. Replace the letter 'o' with 'r' in the sentence.
a yrung bry in a shrpping cart lrrking at trrth brushes

Sentence: 'a person on a tennis court holding a tennis racket'. Replace the letter 'u' with 'y' in the sentence.

a person on a tennis coyrt holding a tennis racket