Here is a very simple solution:
- Find the topics & questions you have little knowledge of (you can also find a list in my book) Common topics include education, tourism, relationships, childcare, arts, travel etc.
- Search for news articles online on these topics. Read and study them
- Make notes about the vocabulary and main points in the article.
- Talk about the article with your speaking practice teacher using the main ideas and vocabulary you learned.
- Move onto the next topic/article.