teacher's duty

important, weighty / valuable

importance, weight / value

pupil, educatee, student (especially in junior high schools (中学校) or high schools (高校) in Japan)

respect, esteem

have respect for

teacher

a cautionary tale, an example of what not to do / a person who serves as a living example of what to avoid

support / hold in check / provide for, maintain, support

get stuck, get jammed