方位介词in/on/under/behind — 英语填空题
题目
Read and fill in the blanks. Lucy 的学校生活:Look! My schoolbag is ___ the chair (在椅子下面). My pencil box is ___ the schoolbag (在书包里面). The English book is ___ the desk (在课桌上面), and my basketball is ___ the door (在门后面).