Answer: Hightlight <em>"The"</em> A complete sentence always start with correct punctuation. Highlight the <em>period (.)</em><em></em>if you can. Highlight <em>"read"</em><em></em>it is a action, complete sentences always have a action. Highlight <em>"editor"</em> complete sentences always have a subject, the subject is the editor.
It would be "<span>I was present at the sessions of the great Congress in the month of December." He is using that sentence to give credibility to what follows.</span>