题目内容：

根据短文内容，用恰当的人称代词或物主代词填空，使短文完整、通顺。

Hello, 1.  am Mike. Look! This is 2.  pen. That is an English book. It’ s not 3.. It’s Rick's. 4.  book is in the schoolbag. What are those? 5.  are Linda’s pencils. Is the ruler 6.，too? No, it isn’t. It’s Bob’s. What about that blue pencil box? Is 7. Bob’ s? No, it isn’t.  8. is red.