优题课 - 聚名师,上好课(www.youtike.com)
  首页 / 试题 / 高中英语 / 试题详细
  • 科目:英语
  • 题型:单选题
  • 难度:容易
  • 人气:1783

The house could fall down soon if no one       some quick repair work.

A.has done B.is doing C.does D.had done
登录免费查看答案和解析

Thehousecouldfalldownsoonifnoo