what I had originally thought, the trip turned out to be fun.A. Instead ofB. In spite of

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

A. Instead ofB. In spite of(答案→)C. Contrary toD. 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。

回答的不错