question: available e-book formats: epub, pdf
Capitalize this past sentence correctly.
A: Available e-book formats: EPUB, PDF

question: read the interim report for a/s storebælt.
Capitalize this past sentence correctly.
A: Read the Interim Report for A/S Storebælt.

question: in 1933 he published a theorem on convex polyhedra and an elementary proof of the existence of a centre of symmetry in a three-dimensional convex polyhedron.
Capitalize this past sentence correctly.
A: In 1933 he published A theorem on convex polyhedra and An elementary proof of the existence of a centre of symmetry in a three-dimensional convex polyhedron.