方位介词in/on/under等 — 英语填空题
题目
用 in / on / under / behind 填空：1. My pencil is ___ the desk, not on it — it's on the floor. 2. The map of China is ___ the wall of our classroom. 3. Li Ming's schoolbag is ___ his chair, so you can't see it from the front. 4. Look! The cat is sleeping ___ the box, and the box is full of books.