---I’mafraidthatIcan’tdoit.---Oh,youshouldbelieveinyour...

问题详情：

---I’m afraid that I can’t do it.

---Oh, you should believe in yourself. You won’t know what you can do______ you try it.

A. if            B. because       C. until           D. while

【回答】

C

知识点：连词

题型：选择题