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( ) 1. Our classroom is _________ floor. A. on the fourth B. at the fourth C. on fourth D. at fourth ( ) 2. Jason does exercise in a _________ every day. A. music room B. library C. gym D. toilet ( ) 3. Tom wants me _________ a model ship for him. A. make B. makes C. making D. to make ( ) 4. I must go to the __________ office now. A. teacher’s B. teacher C. teachers’ D. teachers ( ) two playgrounds, a hall and a garden in our school. A. There has B. There have