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 1829

When _____ about one of the biggest concerns today, many citizens mentioned the sharp rise in housing price.

A.asking B.to ask
C.asked D.having asked
登录免费查看答案和解析
相关知识点

Whenaboutoneofthebiggestconcer