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

Sentence: 'a woman is standing on a street curb'. Replace the letter 'a' with 't' in the sentence.
t womtn is sttnding on t street curb

Sentence: 'a plane getting ready to land on a runway'. Replace the letter 'n' with 'o' in the sentence.
a plaoe gettiog ready to laod oo a ruoway

Sentence: 'some giraffes stand close to a fence near people'. Replace the letter 'n' with 'h' in the sentence.

some giraffes stahd close to a fehce hear people