On the long journey, Peter a most interesting guide. We all had a wonderful time.
A. practiced
B. behaved
C. proved
D. conducted
网友回答
A. practiced
B. behaved
(答案→)C. proved
D. conducted
解析：本题考查动词的用法。首先理解句子的意思：“漫长的旅途中，彼特被证明是一个很有趣的导游。我们都玩得很开心。”prove后接to be+形容词，to be可以省略。