Written by: David Bohlke has 25 years of experience as a teacher, trainer, program director, editor, and materials developer. He has taught in Japan, Korea, Saudi Arabia, and Morocco, and has conducted multiple teacher-training workshops around the world. David holds an M.A. in Applied Linguistics / TESOL and is currently based in Singapore. David is the author of Skillful Foundation, level 1 and level 2 Student books. Series Consultant: Dorothy Zemach now concentrates on writing and editing ELT materials and conducting teacher training workshops. Her areas of speciality and interest are teaching writing, teaching reading, business English, academic English, testing.