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

Sentence: 'a chinese entree displayed on a red plate'. Replace the letter 'n' with 'z' in the sentence.
a chizese eztree displayed oz a red plate

Sentence: 'a young man playing tennis and preparing to hit the ball'. Replace the letter 'e' with 'c' in the sentence.
a young man playing tcnnis and prcparing to hit thc ball

Sentence: 'a person is piercing an apple with a small, sharp knife'. Replace the letter 'a' with 't' in the sentence.
t person is piercing tn tpple with t smtll, shtrp knife