Mr. K’s Classes Before buying a course, please register and/or log in.(Even for the free ones.) Login Mr. K's Classes Free English for Academic Purposes Continue Study Free TOEFL Prep Continue Study Free Academic English (6th Year) Continue Study Free Eikaiwa (2nd Year) Continue Study Free College Prep (Temple University – Japan AEP) Continue Study Free Sougou Eigo (5th Year) Continue Study Free Sougou Eigo (4th Year) Continue Study Free Basic Verb Tenses Learn the basics of English verb tense. Enroll Now Free Adjective Clauses Everything you need to know about adjective clauses and more. Enroll Now 50.00 Subject-Verb Agreement Is or are? Was or were? Do or Does? How do you know? Enroll Now 500 Mr. K’s Grammar Boot Camp Stop guessing! Build your grammar core! Enroll Now 200 Foundation Grammar Start from the very beginning. Enroll Now! It's Free!