方位介词in/on/under等 — 英语选择题
题目
Look at Lily's classroom. Her schoolbag is on the desk. Her English book is in the schoolbag. Her pencil box is under the desk, and her keys are in the pencil box. Where are Lily's keys? A. On the desk. B. In the schoolbag. C. Under the desk, in the pencil box. D. In the English book.