The ultimate GTEC® workbook app. Supports GTEC Advanced reading, listening, writing, and speaking. Contains 1183 questions including important English words. Commentary / Japanese translation is posted for all problems. Let's solve the problem in the gap time and improve your ability! GTEC® is a registered trademark of Benesse Corporation. This application was developed by STUDYSWITCH Co., Ltd. This content has not been approved, recommended, or otherwise considered by Benesse Corporation. If y