Why didn't you tell me the news of the meeting?  

—I knew nothing about it, or I _______ you.[ ]

A. would tell    

B. had told      

C. told        

D. would have told

熟练使用包扎工具的重要标志是：一要了解各种商品包装（）的内容；二要会操作或使用这些用品。

A.工具种类

B.用品分类

C.工具或用品的分类

D.工具或用品