It took us several hours to make the old man of the safety of travelling by air.A. belie

问题补充：

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

答案：

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。