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

Sentence: 'a man on a horse in riding gear looking onward'. Replace the letter 'o' with 'h' in the sentence.
a man hn a hhrse in riding gear lhhking hnward

Sentence: 'there is a woman holding a tennis racket'. Replace the letter 'l' with 's' in the sentence.
there is a woman hosding a tennis racket

Sentence: 'a person skis down a slope of snow'. Replace the letter 'd' with 's' in the sentence.
a person skis sown a slope of snow