Where in a sentence is an introductory clause placed?

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

Evaluate the argument in president kennedy’s inaugural address for sacrificing oneself for the greater good of humanity. is this argument convincing? in what ways can we see the legacy of his request in this word today.

Drag the tiles to the boxes to form correct pairs. match each excerpt to the type of characterization it uses.