--I'm sorry. I ________ at you the other day.--Forget it. I was a bit out of control myself.A.shouldn't shoutB.shouldn't have shoutedC.mustn't shoutD.mustn't have shouted
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B解析考查情态动词。should have done表示应该做而未做；shouldn't have done表示不应该做而做了：I shouldn't have shouted at you.我不应该向你大嚷(but I did)。其他选项干扰性不强，误选率较低。本题稍易。