Answer:
1. I <em><u>had</u></em> a frightening dream last nigh<em><u>t.</u></em> I dreamed that I was walking high up on a railroad trestle.
2-3. It looked like the one I used to walk <em><u>on when </u></em> I was about 10 years old.
4. At that height, my palms were sweating, just as they did when I was a boy.
5. I could see the ground out of the corners of my eye<em><u>s. </u></em> I felt a swooning, sickening sensation.
6. Suddenly, I realized there were rats below, thousands upon thousands of rats.
7-8. They <em><u>knew</u></em> I was up on the trest<em><u>le, and t</u></em>hey were <em><u>laughing because </u></em>they were sure they would get me.
9-10. <em><u>Their</u></em> teeth glinted in the moonligh<em><u>t.</u></em> <em><u>Their</u></em> <em><u>red</u></em> eyes were like thousands of small <em><u>reflectors that</u></em> almost blinded my sight.
11. Sensing that there was something even more hideous behind m<em><u>e,</u></em> I kept moving forward.
12. Then I realized that I was coming to a gap in the trestle. I knew there was no way I could stop or go bac<em><u>k.</u></em> I would have to cross over that empty gap.
13-14-15. I jumped in despai<em><u>r,</u></em> <em><u>knowing</u></em> I would never make i<em><u>t, and</u></em> felt myself falling helplessly down to the swarm of rejoicing rats.
16-17. I woke up covered in <em><u>sweat</u></em>, half expecting to find a rat in my bed.
18. I realized then I should <em><u>not</u></em> watch scary television shows before I go to be<em><u>d.</u></em>
Explanation: