用所给单词的适当形式填空。

1. Remember  ______ (do) your homework ,boys and girls. 

2. Nobody ______ (take) a walk in the garden, it's too cold today. 

3. He ______ (not wear) glasses. 

4. One of boys ______ (have) curly hair.

5. Are these photos ______ (you)?

我国肝癌常见原因为（）

A.肝炎后肝硬化

B.酒精肝

C.阿米巴肝脓肿

D.肝腺瘤

E.黄曲霉素感染