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>
        
                    
             
        
        
        
What type of verb is began?
Began and begun are two forms of the irregular verb begin. Began is the simple past conjugation. Began is not used with any helping verb. Begun is the past participle form. Begun must always have a helping verb to be correct.
 
        
             
        
        
        
Error identification is a type of competitive test where one needs to identify the grammatical errors in a sentence. Though termed as Sentence Correction, most often, problems in this topic need one to only classify sentence errors.
 
        
             
        
        
        
This question is incomplete, here´s the complete question.
Based on the eBook serial "Under the Tall Pines": 
How does the image of “labyrinthine corridors” affect the passage? a) It suggests that Zoë’s job in the video library will be rather complicated. b) It helps convey the idea that the video library is not an easy place to find. c) It suggests that the Tall Pines Film Studios is a big company in a large building. d) It helps convey that the video library is tucked away in the back of the film studio.
 
Answer: b) It helps convey the idea that the video library is not an easy place to find.
Explanation:
The word "labyrinthine" refers to something complex and confusing, like a labyrinth with its irregular arrangement of passages that make it complicated to find one's way. 
In this example, as Zoë is on her first day working at the video library at Tall Pines Film Studios, the use of that word bears her impression of the video library as a place that is not easy to find.