I accept that he is not perfect I do actually like the person.A. WhileB. SinceC. Before

问题补充：

I accept that he is not perfect, I do actually like the person.

A. While

B. Since

C. Before

D. Unless

答案：

(答案→)A. While

B. Since

C. Before

D. Unless

解析：句意：尽管我承认他并不完美，但我确实喜欢这个人．while尽管；since既然；before在......之前； unless除非，根据句意故选A。