题目内容

Oh, I'm not feeling well in the stomach. I ________ so much fried chicken just now.
A．shouldn't eatB．mustn't have eaten
C．mustn't eatD．shouldn't have eaten
D
答案：D　考查情态动词。情态动词与动词原形连用可以表示对现在和将来的推测；当它与动词完成式连用时表示对过去的推测。本题根据just now可排除A、C两项；must have done意为“想必过去一定做过某事”，其否定式常用can't have done形式；shouldn't have done意为“过去本不应该做某事”。由语境可知，此处是指刚才本不该吃那么多炸鸡。故D项正确。
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