Since David downloaded a virus into his puter, he can not open the file now.
A. readily
B. accidentally
Chorribly
D. irregularly
网友回答
A. readily
(答案→)B. accidentally
C. horribly
D. irregularly
解析：考查副词：A. readily乐意地；快捷地；轻而易举地；便利地B. accidentally 偶然地，意外地，C. horribly可怕地D. irregularly不规则地，句意是：因为大卫偶然的把病毒下载到他的电脑上，现在他打不开文件了。选B。