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 1090

For many years, ____ animals for carrying food and other supplies from one area to another has been a means of living in Xinjiang Autonomous Region .

A.trained B.training C.having trained D.to have trained
登录免费查看答案和解析

Formanyyears,animalsforcarryin