Don't worry for PartIII. In fact, there are many threads about Part III in this fourm, you should search and study them.
1. No limited lines for each answer.
2. They don't give you a word document.
3. About the question, you can seach the fourm.
Dear Chao cai,
There are 25~30 classes in my classes.
You should search your question in the fourm. You can find out the answer.