I enjoy learning English it takes me a lot of time.A. unlessB. thoughC. becauseD. so

问题补充：

I enjoy learning English it takes me a lot of time.

A. unless

B. though

C. because

D. so

答案：

A. unless

(答案→)B. though

C. because

D. so

解析：unless除非；though虽然，尽管；because因为；so因此。句意：尽管花费我很多时间，但是我还是喜欢学习英语。结合语境可知选B。