Fragments, run-on sentences, comma splices, correct sentences.

He sat upright chills of fear ran through his body.

The animals weren't hungry, they had already eaten.

I am never very late, never very early, but never on time.

In 79A.D., Mount Vesuvius erupted Pompeii was destroyed.

The sky became dark, and it began to rain.

Ms. Jenner, the coach of our cross-country team, has placed us on a rigorous training program.

A doctor of great skill and devotion to her patients.

The camper wasn't frightened by the bear; he was terrified.

As soon as the girl finished high school, she started taking flying lessons.

We enjoyed a long afternoon of play, afterwards, everyone ate an enormous supper.