question: "oh, how dreadfully lonely he must have been," said she.
Capitalize this past sentence correctly.
A: "Oh, how dreadfully lonely he must have been," said she.

question: previous article microsoft improves activation in windows 10 in latest insider build
Capitalize this past sentence correctly.
A: Previous article Microsoft improves activation in Windows 10 in latest Insider Build

question: training dvds provide examples for single exercises and complete workouts with the sling trainers.
Capitalize this past sentence correctly.
A: Training DVDs provide examples for single exercises and complete workouts with the sling trainers.