you may be right I can’t agree completely.A. WhileB. AsC. IfD. Since

问题补充：

you may be right , I can’t agree completely.

A. While

B. As

C. If

D. Since

答案：

@@(答案)A. While@@B. As@@C. If@@D. Since

解析：while用作从属连词时,可表示“尽管、虽然”,引导一个让步状语从句。