!! alarm !! The app is missing the last part of the present perfect. If you go to the link below, there is also a commentary on the rest of the past perfect, so please refer to it.^^https://chocolang.tistory.com/3Easily understand and memorize the meaning of English words,I am confident that I will be able to have the experience of naturally learning grammar that I felt was difficult.In particular, I hope that many middle and high school students will use it.
chocolang
