. —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
网友回答
A. shouldn’t shout
(答案→)B. shouldn’t have shouted
C. mustn’t shout
D. mustn’t have shouted
解析：由于must表示推测时通常不用于否定句，所以可排除C和D；再根据句中的the other day（几天前）可知，此处谈的是过去的情况，故要用“情态动词+完成式”，即答案移过B。