question: unsure about which type of b8 file you have? do you want to know exactly what it is, who created it, and how to open it?
Capitalize this past sentence correctly.
A: Unsure about which type of B8 file you have? Do you want to know exactly what it is, who created it, and how to open it?

question: apnic and cloudflare announced the free 1.1.1.1 dns resolver service, which is intended as a drop-in replacement to protect your privacy from providers.
Capitalize this past sentence correctly.
A: APNIC and CloudFlare announced the free 1.1.1.1 DNS resolver service, which is intended as a drop-in replacement to protect your privacy from providers.

question: well the first time, welcome!
Capitalize this past sentence correctly.
A: Well the first time, welcome!