It is several years since he ______ ill and his illness _______ great damage to his health.     [ ]

A. fell; has done  

B. fell; does  

C. was; had done    

D. felt; has done

制皮的方法有多种多样，在操作上常用的方法有：开皮、拍皮、打皮、开小酥、开大酥、（）。

A、切皮

B、捏皮

C、埋皮

D、顶皮