Read the following paragraph and underline the topic sentences.
My brother and I went to Lake Kenilworth today, as we usually do on the forth of July, to do a little fishing off the boat of our dad's boss, Mr. Ciatti. Since Mr. Ciatti was out of the town on a business trip, he asked us to use his boat so that someone would be keeping track of it. Excited about the prospect of spending the day on Mr. Ciatti's cabin cruiser, we hopped into our dad's new Old mobile and drove off to pick up our friends Robert and Charles. We were beginning to count our fish already and were making bets about who would catch the biggest. Little did we know that we would not be able to do any fishing that day. When we got to the lake, we discovered that Mr. Ciatti's boat had come unmoored. Though the damage was slight, we had to spend the rest of the day getting it tied up again and repairing the damage.