Review the paragraph and answer the question that follows. [1] People say the necessities of life are food, water, shelter, and clothing, but I think a fifth item should be added to the list: Scotch tape. [2] Hardly a day passes that I do not use this sticky cellophane for some beneficial purpose. [3] When I get so excited about my world history class that I tear a page in the book, Scotch tape comes to my rescue. [4] At night when I don't feel like rolling my hair, what do I do? [5] I tape it in place, of course. [6] I may look like a twentieth-century mummy, but the purpose is accomplished. [7] Have you ever been dressed up to eat at a big, fancy restaurant? [8] Just as you get out of the car someone cheerfully announces, "Your hem is down!" [9] No need to panic; just stick it up with--you guessed it--scotch tape!

Which sentence is the topic sentence? Type the sentence number in the box.