方位介词 in/on/under — 英语选择题
题目
A ball is in a box. The box is under a desk. Which sentence is right? A. The ball is on the box. The box is under the desk. B. The ball is in the box. The box is under the desk. C. The ball is in the box. The box is on the desk. D. The ball is under the box. The box is on the desk.