根据短文内容，完成下列任务。
Hello! My name is David. I'm in Class 3, Grade 7. Here (A) ________ our classroom. Thirty-two desks and thirty-two chairs (B) ________ in it. Some bags are on the desks. Some books are in the bags. (C)一些录像带在地板上。 Some plants are near the windows. They are fresh. What's that ? It's a map of China. Look! What's this? It's a baseball. (D)It's Jeff's baseball. It's (E)under the desk.