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:中等
  • 人气:890

Great efforts to increase grain production       if food shortages are to be avoided.

A.could be made B.must be made
C.might be made D.would be made
登录免费查看答案和解析

Greateffortstoincreasegrainpro