How many SOMs have you mastered? And how do you study them?

I’ve mastered almost 800 SOMs. I’m not sure I remember all of the sentences perfectly, but I’m trying to do that. Anyway, the most important thing is that my English has improved so far. Originally, I used the orange notebook to remember them. Recently, I have started to use Quizlet. I think this app is an effective way to review the content that I learn in class. We always have smartphones, but we normally do useless things like just looking at websites or Youtube videos. At this point, using Quizlet is the best way for me to study. Personally, when I take the subway or bus, I use that app to remember and study the SOMs. Every little bit helps.