I read those words I had no idea what I was going to be and I made more efforts on writing

问题补充：

I read those words I had no idea what I was going to be and I made more efforts on writing afterwards.

A. When

B. Unless

C. Until

D. While

答案：

A. When

B. Unless

C. Until

D. While

解析：本句句意为：直到我读了这些话，我才知道我将来干什么。些题是not…until的变式结构。故选C。