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

Sentence: 'a boy riding his skate board on an obstacle course'. Replace the letter 'e' with 'b' in the sentence.
a boy riding his skatb board on an obstaclb coursb

Sentence: 'a herd of zebra grazing in a lush green field'. Replace the letter 'h' with 'j' in the sentence.
a jerd of zebra grazing in a lusj green field

Sentence: 'a pair of parking meters at a street side'. Replace the letter 'd' with 'q' in the sentence.

a pair of parking meters at a street siqe