It was the night before my math exam in the 2nd semester. I could not do better in the math exam of 1st semester. a, I was really serious about the exam. b, I was careful enough not to spend a single moment in vain. But, the night did not pass smoothly at all. c, it was full of mishaps. d, the electricity went out. I waited for it for about an hour, however, there was no sign of its coming. e, I lighted a candle and began to study again. The flickering light of the candle was creating problems for me. Soon, I began to feel a bad headache. I really wanted to get rid of it. f, I left my reading room and stood in the balcony for some time. I began to feel better, but could not stay there for long. g, I left the place. h, I went to my reading room again. i, to add to my gladness the electricity came. I could finish my study within two hours. j, I went to bed with a happy mind.