It is no use trying to talk him into studying hard; he can only be by force.
A. upset
B. harmed
C. rescued
D. persuaded
网友回答
A. upset
B. harmed
C. rescued
(答案→)D. persuaded
解析：A. upset使…不安，B. harmed伤害 ，C. rescued 救援，D. persuaded说服，句意：试图说服他努力学习没有用，他只能强迫才能说服。选D。