Teacher Charles' knowledge is excellent and strong in many fields; so, in this sense, the tutoring with him, is very productive in many topics. In my specific case, he helped me giving me a new and different approach to Business English, and also to handle in a better way the anxieties and insecurities in business presentations, and corporate meetings. I highly recommend teacher Charles!
Great teacher! Explanation are clear. Mark uses a variety of teaching methods. He shows an individual approach to students. Mark ls perfect in teaching both general and business English.
I learned a lot through today's class. Indeed, Joshua has a vast knowledge of business English, it helps me a lot improving my social skills as well as presenting before a large audience.