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

Sentence: 'one wall in the room is flanked by a lovely piece of furniture which displays several object d'art'. Replace the letter 'n' with 'z' in the sentence.
oze wall iz the room is flazked by a lovely piece of furziture which displays several object d'art

Sentence: 'a couple of kids with rackets on a court'. Replace the letter 'u' with 'd' in the sentence.
a codple of kids with rackets on a codrt

Sentence: 'a bakery with a number of pastries on cooling racks'. Replace the letter 'a' with 'm' in the sentence.
m bmkery with m number of pmstries on cooling rmcks