question: for certain sites, you may be requested to accept specific user agreements which may contain provisions regarding processing of personal information.
Capitalize this past sentence correctly.
A: For certain sites, you may be requested to accept specific user agreements which may contain provisions regarding processing of personal information.

question: slice into quarters (or 1/8s for appetizers) and serve hot. repeat with next 2 tortillas.
Capitalize this past sentence correctly.
A: Slice into quarters (or 1/8s for appetizers) and serve hot. Repeat with next 2 tortillas.

question: nitrogen is a basic element like oxygen.
Capitalize this past sentence correctly.
A: Nitrogen is a basic element like oxygen.