阅读下面短文，按照句子结构的语法性和上下文连贯的要求，从A、B、C和D项中选出最佳选项。

Hello！I'm Tom and this is my 1.  Forty desks, forty chairs and one table are 2 the classroom. The desks and chairs are 3. And the table is green, too. 4 is that on the table？It's a computer. It's not 5. It's Ms. Gao's. Ms. Gao is our English 6. She always uses 7 computer in her classes. Is that 8 on the desk Mary's？No, it isn't. It's Jane's. Jane is 9 monitor(班长). She is nine and she is a nice 10. She always helps us with our English.