question: a higher interest-earning from the private capital, and a bigger yield from the state-bonds that replaced the destroyed real capital as a source of earning.
Capitalize this past sentence correctly.
A: A higher interest-earning from the private capital, and a bigger yield from the state-bonds that replaced the destroyed real capital as a source of earning.

question: demand for games you can play on your mobile device has never been higher.
Capitalize this past sentence correctly.
A: Demand for games you can play on your mobile device has never been higher.

question: 14 and ye answered me, and said, the thing which thou hast spoken is good for us to do.
Capitalize this past sentence correctly.
A: 14 And ye answered me, and said, The thing which thou hast spoken is good for us to do.