1. 橡皮擦   crayon   classmate   chalk   eraser   Hint Half-n-half Clue   2. 黑板   textbook   classmate   pencil sharpener   blackboard   Half-n-half Clue   3. 铅笔刀   text   chalk   pencil sharpener   crayon   Half-n-half Clue   4. 等级   ruler   blackboard   grade   satchel   Half-n-half Clue   5. 书桌   chair   eraser   desk   blackboard   Half-n-half Clue   6. 蜡笔   crayon   classmate   blackboard   teacher   Half-n-half Clue   7. 学校   ruler   desk   school   paper   Half-n-half Clue