—Theproblemisverydifficult.I'mafraidyoucan'tworkitoutn...

问题详情：

 —The problem is very difficult. I'm afraid you can't work it out now.

       —           I fail this time, I will try it again.

A. Even if                  B. Since                    C. As if                 D. Though

【回答】

A

知识点：连词

题型：选择题