What word is an example of a demonstrative adjective

Which sentence is written using formal language? a) erin has a crucial appointment early monday morning. b) that was a real bogus tale charlie told the teacher. c) let me have a sneak-peak or i am simply gonna explode. eliminate d) i do not think tim will be here today; he's playing hookie.

Jamal english, mandarin and a bit of arabic. a. speaks b. speak c. speaking d. is speaking

How was don quixote different from the literature before it? how did it signal a change in the history of literature? your answer should contain at least one hundred words.