—What’s the matter with you ?
—Oh, I’m not feeling well in the stomach . I so much fried fish just now .
A. shouldn’t eat
B. mustn’t have eaten
C. shouldn’t have eaten
D. mustn’t eat
网友回答
A. shouldn’t eat
B. mustn’t have eaten
(答案→)C. shouldn’t have eaten
D. mustn’t eat
解析：本句语言环境为“我胃痛，刚才本来不应该吃那么多炸鱼”。shouldn’t have done本来不该做某事，而事实上做了。故选C。