It all depends on you can speak Spanish fluently.A. thatB. itC. it thatD. 不填

问题补充：

It all depends on you can speak Spanish fluently.

A. that

B. it

C. it that

D. 不填

答案：

A. that

B. it

(答案→)C. it that

D. 不填

解析：考查：it做形式宾语，真正地宾语是that 后的从句。句意：那要取决于这一点，就是你能把西班牙语说的很流利。故选C。