Let's practice reading comprehension and speaking! Colloquial English & Academical English both possible. TOEFL iBT as well

I have had a student exchange program back when I was 14 years old and had a great chance to attend to american public high school for few months in North Little Rock City, Arkansas, USA. I have improved my English quite a lot since then, and that's how i got fluent in speaking English. Furthermore, I have prepared for TOEFL iBT since I was very young, which is why I'm quite familiar with this platform. I have taken TOEFL iBT which verifies my English NIveau C1. With me, I could definitely say that you can improve colloquial speaking the most as well as reading comprehension of academical journal, courses, or textbooks. Please let me know if anybody is interested.