the mountains! in tirol one is simply surrounded by them, and they have left an inedible mark on the land and its people.

How would the previous sentence be correctly capitalized?
Answer: The mountains! In Tirol one is simply surrounded by them, and they have left an inedible mark on the land and its people.
things began to go less well for brouncker from around 1675.

How would the previous sentence be correctly capitalized?
Answer: Things began to go less well for Brouncker from around 1675.
if a mass is suspected it can be visualized on x-ray or ultrasound, and in the case that one is found, your veterinarian may need to take a sample of the mass for biopsy.

How would the previous sentence be correctly capitalized?
Answer: If a mass is suspected it can be visualized on X-Ray or ultrasound, and in the case that one is found, your veterinarian may need to take a sample of the mass for biopsy.
when you book you will not be asked to send money: the credit card will only be used for guaranteeing your booking.

How would the previous sentence be correctly capitalized?
Answer: When you book you will not be asked to send money: the credit card will only be used for guaranteeing your booking.