读短文，完成文后的选择题。

    I'm Kate, and my sister is Gina. I am tidy, but Gina is not. In our room, my books and tapes are in the bookcase. My keys are in my schoolbag. I have a clock. It is on the desk. Gina's books are everywhere——on her bed, on her sofa and under her chair. The white model plane is hers. It is under the desk. " Where is my ruler?" "Where are my keys?" Gina always asks.