阅读短文，判断下列句子的正（T）、误（F）。(10分)
This is my school. There are about twenty classes. There are six hundred students in it. It has three small gardens. There are three teaching buildings too. Building A is for Grade 7. Building B is for Grade 8 and Building C is for 9. There is another （另一个）building behind(在……之后) the teaching buildings. There are two libraries and some reading rooms in it. My school is very beautiful. I like it.
1. There are about four hundred students in my school. （ ）
2. Building B is for Grade 9.（ ）
3. Building C is in front of(在……之前) the libraries. （  ）
4. There are only two reading rooms in the building. (    )
5. My school has three gardens.  (   )