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1. sing, after school, they, songs, . 2. am, play , I, chess, going to, at 4:oo. . 3. classes, Thursday, you, do, on, what, have, ? 4. art room, have, on, floor, we, an, the, first. . 5. you, clinic, do, in, a, have, school, your, ? 。 ( ) 1. The teacher’s office is ________ the second floor. A. on B. in C. at ( ) 2. A: Do you have a gym in your s