what I had originally thought, the trip turned out to be fun.
A. Instead of
B. In spite of
C. Contrary to
D. Because of
网友回答
A. Instead of
B. In spite of
(答案→)C. Contrary to
D. Because of
解析：复合介词contrary to“与相反；违反”，本题意思是“跟我原先想的不一样，这次旅行结果很有趣”。其他介词与本题含义不一致。