for quite a few days， he had to go to hospital for further treatment.

A．Being ill

B．Falling ill

C．Having been ill

D．To be ill

早期胃癌最常见的类型是（）

A、Ⅰ型。 

B、Ⅱa型。 

C、Ⅱb型。 

D、Ⅱc型。 

E、Ⅲ型。