问题补充:
I knocked on the door several times but answered, so I left.
A. somebody
B. nobody
C. anybody
D. everybody
答案:
A. somebody
(答案→)B. nobody
C. anybody
D. everybody
解析:
试题分析: 句意:我敲了几次门,但没人开门,所以我走了。 somebody某人,nobody没人,. anybody任何人, everybody每个人。根据语境可知离开是因为没人开门,故选B.