This may be a stupid question, but I have to ask again...

I downloaded FeiFei Math. I don't care there is no English version for it, however, for most of the questions, why there is no "A,B,C,D" choices while there is explanation for that question with the answer like A, B, C, D. I searched several forums and nobody asked this question and nobody answered my question either. Did I miss something here?

Also, I'm a beginner. You guys talked a lot about GWD. May I know what GWD is? Where can I download the complete version of it?

Thanks a lot!