I just couldn’t believe you should have made such a silly mistake. Look! You have such a

问题补充：

I just couldn’t believe you should have made such a silly mistake. Look! You have such an important document.

A. left off

B. left out

C. left alone

D. left aside

答案：

A. left off

(答案→)B. left out

C. left alone

D. left aside

解析：考查动词短语辨析。句意：我就是不能相信你会犯这样愚蠢的错误。看！你竟然漏掉了一个重要的文件。A排除，中断，戒掉；B遗漏，省略，忽略；C不打扰，不理会；D搁置，不考虑。故选B。