启教通信息平台
  首页 / 试题 / 初中英语 / 试题详细
  • 科目:英语
  • 题型:单选题
  • 难度:中等
  • 人气:252

Many students didn’t realize the importance of study _______ they left school.

A.when B.until C.after D.unless
登录并查看解析

Many students didn’t realize t