问题详情：
根据句意及图片提示，用适当的介词填空。
1. My pencil is ________ my pencil case. 2. His books are ________ the bookcase.
3. Your eraser is ________ the chair. 4. The baseball is ________ the floor.
5. Emma’s notebook is ________ the sofa.
【回答】
1. in 2. in 3. under 4. on 5. on
知识点：相似 相近词比较
题型：完成句子
