问题
选择题
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
答案：B
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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：B