question: and he said to me, son of man, take this roll for your food, and go and say my words to the children of israel.
Capitalize this past sentence correctly.
A: And he said to me, Son of man, take this roll for your food, and go and say my words to the children of Israel.

question: he was involved in school reforms and chaired a commission whose remit was to devise a new syllabus for school level mathematics.
Capitalize this past sentence correctly.
A: He was involved in school reforms and chaired a commission whose remit was to devise a new syllabus for school level mathematics.

question: each of us is required to cooperate in, and maintain the confidentiality of, any such investigation.
Capitalize this past sentence correctly.
A: Each of us is required to cooperate in, and maintain the confidentiality of, any such investigation.