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 容易
  • 浏览 1881

I just don't understand_______ that prevents so many Americans from being as happy as one might expect.

A.why it does B.what it does C.what it is D.why it is
登录免费查看答案和解析

Ijustdontunderstandthatprevent