—The trip must have been terrible，wasn’t it?
—No. ，I enjoyed every minute.
A. On the other hand
B. At one time
C. At the same time
D. On the contrary
网友回答
A. On the other hand
B. At one time
C. At the same time
(答案→)D. On the contrary
解析：On the other hand 另一方面，At one time曾经，At the same time与此同时，On the contrary正相反，句意：这次旅行一定很糟糕吧，是不是？不，正相反，我享受了每一分钟。故选D。