其次在选择之前打探一下这个培训机构，最好可以打探一下这个机构出来的学生，毕竟只有机构的学生才知道这个机构到底怎么样，讲解的课程是好或者不好。
Secondly, you shall do some research on the agency before choosing it; it’s best to contact former students of the agency; after all, only students know how the agency really is and whether the curriculum is good or not.