Trang chủ/Câu hỏi/According to the letter, what is the key to 24/7 Fitness' success?Quay lạiClick meXem chi tiết bài testChia sẻAccording to the letter, what is the key to 24/7 Fitness' success?A. Effective communication with regional ownersB. Rapid nationwide expansionC. A team of experienced researchersD. Comprehensive training of employees