Complete both Cambridge IELTS 21 General Training Practice Test 4 Writing tasks under the 60-minute limit. Task 1 is a semi-formal letter introducing yourself to a workplace mentor, outlining your background, requesting guidance and arranging a first meeting. Task 2 asks why people spend heavily on vitamin pills and how they can be persuaded to improve their diet instead. Built-in word counts support accurate timing, followed by detailed AI-supported feedback across all four IELTS criteria.