because they think nothing of telling you about themselves a

because they think nothing of telling you about themselves and their opinions in seminar groups!
怎么翻译?前面说“被采访的学生想要确保调查问卷中不会暴露他们的名字,因为.” 这句感觉缺成分呢,该怎么翻译,雅思8 test 2 听力section4中的一段.