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:较易
  • 人气:1736

People have lots of problems living in the central Australian desert, ____ the lack of water is the most serious one.

A.of which B.which C.for which D.where
登录免费查看答案和解析

Peoplehavelotsofproblemsliving