---Can you tell me your of success?
---There’s no easy way to learn English well. Just study hard.
A. duty
B. trouble
C. secret
D. rule
网友回答
A. duty
B. trouble
(答案→)C. secret
D. rule
解析：duty责任，职务；trouble麻烦，故障；secret秘密，秘诀；rule规则，管理。句意：你能告诉我您成功的秘诀吗？——学好英语没有捷径。只要努力学习就行。结合语境可知选C。