Answer:Dawson I believe.
Explanation: Because the entire sentence is telling you that they left Dawson making it the main focus of the sentence.
Answer:
This is a sentence.
Explanation:
It contains the subject, students, and the predicate, are working. This is the skeleton of the sentence, while also providing adverbial prepositional phrases that tell us where they are working, in the classroom, and how they are working, on grammar.
The answer is text document.
Video clip - it's a video, you can't print it
sound file - it's a sound, you can't print it
digital image - *digital*, not printed
