Lucy: Mum, can you see my pen?

Lucy: Mum, can you see my pen?
Mother: No, I can’t. _________ that on the desk?
Lucy: Let _______ see. It’s my pen.
Mother: _______ is your pencil-box?
Lucy: Oh, my pencil-box is in my bag.
Mother: Where is your bag?
Lucy: I can’t see.
Mother: Is it on your desk?
Lucy: _______ , it isn’t.
Mother: Look! Lucy. It’s ________ ________ .
Lucy: _______ ?
Mother: Behind the door.
Lucy: Oh, it’s here. I can _______ it.
Mother: Is _______ pencil in your pencil-box?
Lucy: Yes, it is.
Mother: Lucy, you must look _______ your things.
Lucy: Thank you very much, mum.填空