Oh I'm not feeling well in the stomach.I so much fried chicken just now.A. shouldn't eatB

问题补充：

Oh，Im not feeling well in the stomach.I so much fried chicken just now.

A. shouldn eat

B. mustn have eaten

C. shouldn have eaten

D. mustn eaten

答案：

A. shouldn eat

B. mustn have eaten

(答案→)C. shouldn have eaten

D. mustn eaten

解析：

just now是表示过去的时间状语。情态动词在表示过去发生的事时，必须用“情态动词＋have＋过去分词的形式”。所以只能在选项B或C中确定答案。mustn have eaten是一个错误选项，因为“mustn ＋动词”表示“禁止”，不表示判断或推测。