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

Sentence: 'a study features the color green and old-fashioned furniture'. Replace the letter 'e' with 'd' in the sentence.
a study fdaturds thd color grddn and old-fashiondd furniturd

Sentence: 'a man is somewhat hard to be seen in the wave, on his board'. Replace the letter 's' with 'b' in the sentence.
a man ib bomewhat hard to be been in the wave, on hib board

Sentence: 'a woman is snowboarding down a snowy hill'. Replace the letter 'l' with 'b' in the sentence.

a woman is snowboarding down a snowy hibb