阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空。

Hi, I'm Gina Smith. Gina is my (one) name and Smith is my last name. Look at the desk the chair. They're mine. My book is on the desk. It's English book. My blue pencil box is the desk, too. Where is my pen? I can't (find) it in the pencil box. Oh, it's under the desk.