the girl makes a living_flowers A by sell B by selling C of sell B of selling 说明理由

问题描述:

the girl makes a living_flowers A by sell B by selling C of sell B of selling 说明理由

选B by selling
首先翻译语段:这个女孩通过卖花来谋生
通过翻译得知用BY表“通过”
另外BY是介词后面应该+动词的ing形式
由此得知是B