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

Sentence: 'a woman is on skis riding down the snow covered sloped'. Replace the letter 'd' with 'q' in the sentence.
a woman is on skis riqing qown the snow covereq slopeq

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 bench sitting on top of some steps by a wall'. Replace the letter 'i' with 'b' in the sentence.
a bench sbttbng on top of some steps by a wall