I like French very much I study it very hard.A. Because; soB. So; becauseC. Because; /D

问题补充：

I like French very much, I study it very hard.

A. Because; so

B. So; because

C. Because; /

D. So; /

答案：

A. Because; so

B. So; because

(答案→)C. Because; /

D. So; /

解析：Because因为，后面接元音；so因此，后面接结果。这两个词一般不连用。句意：因为我非常喜欢法语，因此我学得非常努力。结合语境可知选C.