【单选题】Tom, Bill and Dave lost their backpacks. They are at the Lost and Found desk. The backpacks are the same, but the things in the right backpack. Tom: I have a math book and a pencil case in my backpack...
【简答题】阅读理解 Boy: Oh, no! My book isn't in my backpack! Where is it? Girl: Your book is on the table. Boy: OK. My keys? Where are my keys? Girl: Your keys are in your backpack. Boy: Yes,yes. Where are my pen...