it hurts to admit i did something wrong.

How would the previous sentence be correctly capitalized?
Answer: It hurts to admit I did something wrong.
medicines prescribed as antidepressants in humans are becoming more common for use in animals.

How would the previous sentence be correctly capitalized?
Answer: Medicines prescribed as antidepressants in humans are becoming more common for use in animals.
nearest airport: 64 km

How would the previous sentence be correctly capitalized?
Answer: Nearest airport: 64 km
the usage of such tools may be of great help during the development and debugging of slaves and the installed programs.

How would the previous sentence be correctly capitalized?
Answer: The usage of such tools may be of great help during the development and debugging of Slaves and the installed programs.