동명사? 부정사?

most of/ most people choose e.
이 문자에서 답은 most people입니다. most of people은 답이 왜 안 되나요?

the golden ratio came from the human body which was thought being/to be the most beautiful.
이 문장에서 답은 to be인데 왜 being은 틀리나요?

또
if you draw rectangle around the face, that rectangle turns out to be/being golden.에서 답이to be인데 왜 being은 안되나요?