The majority of participants were told of those issues, as well as the teacher who was teaching. Some people never say He gave the reason that they want to solve the problem by itself, because it is his problem.
Most students have said those problems to the teachers who teach them. Some people never say They argue that they need to solve problems on their own because it is his problem.
Most of the students said the teacher who taught them unto them, some people never tell. He reasoned that they must solve the problem by yourself because it's his problem.