首页 / 高中英语 / 试题详细
  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 936

Edison was a clever boy, and ______ he was fourteen, he had learned advance mathematics by himself.

A.whenever B.by the time C.the moment D.ever since
登录免费查看答案和解析

Edisonwasacleverboy,andhewasfo