I have been thinking the topic of my assigment for all day long. I want to discuss how people improve their communicative competence with the help of apps like Italki, duolinguo and so on. I want to do some case studies to collect some data. However, due to the pandemic, i cannot carry out my case study successfully. Could someone tell me anything about how to use online platforms to improve oral competence? And what practices you did online when learning foreign language. I really hope that someone can reply to me.