根据短文内容，完成下列各题。

I'm Mary. This is my room. (A)A bed, a chair, a bookcase and a desk are in it.What is on my desk?(B)一台电脑和一本英语书在它上面。A nice alarm clock(闹钟) is on the desk, too. My school ID card and keys are in the desk. My pencils are not on the desk. Where are they? They are in my pencil box and the pencil box is under my English book.