instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'a cat got caught hiding in the cupboard'. Replace the letter 'i' with 'u' in the sentence.
answer:
a cat got caught hudung un the cupboard

question:
Sentence: 'a giraffe sticks its tongue out in the air'. Replace the letter 'e' with 'l' in the sentence.
answer:
a giraffl sticks its tongul out in thl air

question:
Sentence: 'a bear standing at the border between the shade and the sunshine'. Replace the letter 'h' with 'l' in the sentence.
answer:
a bear standing at tle border between tle slade and tle sunsline