Lesson 4It’s on the fifth floor.同步练习1. Our classroom is ___ the second floor.. A. on B. in C. at2. Don’t laugh _____me. A. on B. in C.at3. The teacher’s office is on the ____ floor.A. five B. fifth C. fiveth 4. He is________ of the three boys.A. tallest B. tall C. the ta...
