question: let nothing disturb you,
Capitalize this past sentence correctly.
A: Let nothing disturb you,

question: prominent nictitans (third eyelid)
Capitalize this past sentence correctly.
A: Prominent nictitans (third eyelid)

question: "the first time we aired football in smooth streaming and hd, the live chat at the game centre literally exploded."
Capitalize this past sentence correctly.
A: "The first time we aired football in smooth streaming and HD, the live chat at the game centre literally exploded."