方位介词 in, on, under — 英语情景题
题目
Sam找不到他的橡皮，向Lily询问。请从 in, on, under 中选择正确的介词填空。
Sam: Lily, I can't find my eraser. Where is it?
Lily: Is it (1)________ your pencil box?
Sam: No, it isn't (2)________ the pencil box.
Lily: Look! It is (3)________ the desk, on the floor.
Sam: Oh, yes! And my English book is (4)________ the desk, on the top. Thank you, Lily!