It took us several hours to make the old man of the safety of travelling by air.
A. believed
B. convinced
C. informed
D. persuaded
网友回答
A. believed
(答案→)B. convinced
C. informed
D. persuaded
解析:A. believed相信,B. convinced使…相信,C. informed通知,D. persuaded说服,句意:花了我们几个小时使这个老人相信乘飞机的安全。Convince sb of sth“使某人相信…”,sb be convinced of…,所以用过去分词做宾语补足语,所以选B。