— I regret to say that I          have shouted at you the other day．
— Forget it． I was a bit out of control myself．  
A．shouldn’tB．mustn’tC．couldn’tD．mightn’t
A
考查情態(tài)動詞+have done的用法：shouldn’t have done“本不該做…而做了”，must和完成時連用不用否定，couldn’t have done：過去不可能做,mightn’t have done“過去可能不做…”,句意是：--我很遺憾的說，我?guī)滋烨安粦?yīng)該對你大聲叫喊的，--沒關(guān)系，那天我有點失控。選A。
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