Life and people. What they do in different situations and why. People are very interesting creatures if you take your time observing them))

Hi, you probably can seek some articles that interest you and your language partners before the practice. With these topics, you are more likely to have a happy conversation with other language partners.  

Thank you for the comments. 
I always try to look for common topics and teach something each time, but sometimes it was tough for me. 
Moreover the person's personality looks nice, I hesitate to refuse talking to them. 
To be honest, it is really boring..