--Since you have enough time, why not try going by boat for a change?
--- .
A. Good idea
B. That’s true
C. I suppose so
D. You are too kind
网友回答
(答案→)A. Good idea
B. That’s true
C. I suppose so
D. You are too kind
解析：在英文中对于别人的建议如果觉得可行可用好主意短语good idea来回答，故本题选A。