Please capitalize where necessary: before buying a lawn mower husqvarna 323l ask all your options, equipment, appearance and warranty from the seller. please note that we are not engaged in the sale and manufacture warranty.
A: Before buying a lawn mower Husqvarna 323L ask all your options, equipment, appearance and warranty from the seller. Please note that we are not engaged in the sale and manufacture warranty.
Q: this guarantees high picture quality, viewing ergonomics and damped fields. to be approved the monitor must also be energy-efficient and meet tough environmental demands, both in manufacturing and use.

A: This guarantees high picture quality, viewing ergonomics and damped fields. To be approved the monitor must also be energy-efficient and meet tough environmental demands, both in manufacturing and use.
Q: a man and his wife were once sitting by the door of their house, and they had a roasted chicken set before them, and were about to eat it together.
A: A man and his wife were once sitting by the door of their house, and they had a roasted chicken set before them, and were about to eat it together.
Problem: there are almost 2 km left of the original city wall, which was 4 km long. several defence towers in the wall are intact and are open to visitors.
Can you repeat this sentence, but capitalize it?
Answer: There are almost 2 km left of the original city wall, which was 4 km long. Several defence towers in the wall are intact and are open to visitors.
Text: we want to be able to report test results, track time, bookmark our last location and more.

Correct capitalization: We want to be able to report test results, track time, bookmark our last location and more.
Text: it is the most commonly used method on these "free giveaway", or "i'm quitting, free items" type sites.

Correct capitalization:
It is the most commonly used method on these "free giveaway", or "I'm quitting, free items" type sites.