question: if you quit, you certainly won't be successful.
Capitalize this past sentence correctly.
A: If you quit, you certainly won't be successful.

question: today's engineers sit all day and night at these desks, endlessly typing.
Capitalize this past sentence correctly.
A: Today's engineers sit all day and night at these desks, endlessly typing.

question: get us in your home, on your television.
Capitalize this past sentence correctly.
A: Get us in your home, on your television.