none of the____came to help the victim of robberyA.lookers-on B.l_英语解答

none of the____came to help the victim of robbery
A.lookers-on B.lookers-ons C.looker-ons D.on-lookers
我选D错了?答案应该选什么?为什么呢?还有连字符应该怎么样?

人气：121 ℃　时间：2019-12-19 12:33:23

解答

应该选C例如照顾婴儿的保姆：baby-site 复数就是baby-sites