“骨母细胞瘤”分型为（）

A.中心型+周围型

B.中心型+骨皮质型

C.中心型+骨皮质型+骨膜型

D.骨干型+骨端型

E.骨干型+干骺型+骨骺型

用所给词的适当形式填空。

1. Our teacher makes _____ (we) very tired.  

2. Do you want _____(go) to the park?        

3. Tommy is three _______ (year) old.  

4. Where does your friend ______ (come) from?  

5. She _______ (live) in Mexico City.  

6. Please write and tell me about _______ (you).

7. Tom and David are good _________ (friend).

8. _________ (not talk) in class.