How does Mr. Mead's interaction with the police car contribute to the plot of the story?

Changing the sentence structure and how quickly events unfold in a story can affect which literally element?

The greatest gift the sumerians gave the world was the invention of writing. the sumerians were wealthy people. they needed some way to keep track of what they owned. they began drawing pictures. they used a reed as a pen. they drew on soft pieces of clay. the soft clay was then dried in the sun. the tablet became a permanent record. later, the sumerian drawings changed into wedge-shaped symbols. this kind of writing is called cuneiform. by putting symbols together, the sumerians could write entire sentences.

When trisha saw the boys on the stage she exclaimed finally a group of students who can act