阅读下面短文，在空白处填入一个适当的词，或填入括号中所给单词的正确形式。

Miss White comes into the classroom. She sees some school things on the teacher's desk. There is a pencil box, a red pencil, two black(pen), a blue watch and orange notebook. Whose are they?

Miss White asks Tina, "Tina, is this (you) pencil box?" Tina says, "Yes, it is. Thank you. " "Are(this) your pens?" asks Miss White. "No, they aren't. They're

(Lucy). " says Tina.

Miss White (go) to Lucy and says, "Are they your pens, Lucy?" Lucy says, "Yes, they are. Thank you. " What the red pencil? Is it(you), too? " Miss White asks. "No, it isn't" says Lucy. "The watch isn't mine the notebook isn't mine, either. " "Oh, I can put themthe Lost and Found Box. " says Miss White.