Please capitalize where necessary: the software also works on windows os and can recover erased files after system restore.
A: The software also works on Windows OS and can recover erased files after system restore.

Q: here spoke the initiate, the illuminate, the man who knew the strength and purpose of "the international." (max nordau helped the process, the course of which he foretold, by writing such best-sellers of the 1890's as degeneration, in which he told the west that it was irredeemably corrupt).

A: Here spoke the initiate, the illuminate, the man who knew the strength and purpose of "the international." (Max Nordau helped the process, the course of which he foretold, by writing such best-sellers of the 1890's as Degeneration, in which he told the West that it was irredeemably corrupt).

Q: on 8 january 2003 the sale of fossils and minerals was launched on the internet, with focus on items for collectors, scientifically interesting stones and stones with an exciting geological history.
A: On 8 January 2003 the sale of fossils and minerals was launched on the internet, with focus on items for collectors, scientifically interesting stones and stones with an exciting geological history.

Problem: "the ways in which employees felt plants and flowers affected their working environment and well-being turned out to be quite complex," jane continues.
Can you repeat this sentence, but capitalize it?
Answer: "The ways in which employees felt plants and flowers affected their working environment and well-being turned out to be quite complex," Jane continues.

Text: he suddenly became bold.

Correct capitalization: He suddenly became bold.

Q: not only are they high, they are increasing.
A:
Not only are they high, they are increasing.