Who won this years Australian Open?

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.

According to stephen hawking in the "origin of the universe" lecture, "why are we here" and "where did we come from" are questions that

Why isn’t the mood saddened by this tragic event