Duty is an act or a course of action that people you to take by social customs, law or religion.
A. persuade
B. request
C. instruct
D. expect
网友回答
A. persuade
B. request
C. instruct
(答案→)D. expect
解析：A说服；B请求；C指导；D期待，预料；责任是一种行动，这种行动是根据社会风尚法律或者规则人们期待着你所采取的。根据句意说明D正确。