--- I’m sorry. I at you the other day. --- Forget it. I was a bit out of control myself.A

问题补充：

--- I’m sorry. I at you the other day.

--- Forget it. I was a bit out of control myself.

A. shouldn’t shout

B. shouldn’t have shouted

C. mustn’t shout

D. mustn’t have shouted

答案：

A. shouldn’t shout

(答案→)B. shouldn’t have shouted

C. mustn’t shout

D. mustn’t have shouted

解析：考点是：情态动词shouldn’t have done的用法。

前句中有明显的时间状语the other day (几天前)，事情发生在过去。句意是“对不起，前几天我不应该对你大嚷大叫。”所以要用“shouldn’t have done”。