The camera you mentioned is of high quality, but it is expensive a camera I can’t afford

The camera you mentioned is of high quality, but it is expensive a camera I can’t afford.
A. so, that
B. so, as
C. too, that
D. too, as

A. so, thatB. so, asC. too, thatD. too, as解析：句意：你提到的照相机很贵，但是这是我买不起的这么贵的照相机。第一空填so，结构是“so+adj+冠词+名词”，第二空后面的句子缺少宾语，所以不能填that，而是理解成定语从句，当先行词被so，as，the same修饰的时候，定语从句用as引导，而且as在定语从句中做主宾表，所以选B。

谢谢了