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

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：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。