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 较易
  • 浏览 1099

. The country has already sent up three unmanned spacecraft, the most recent ______ at the end of last March.

A.has been launched B.having been launched
C.being launched D.to be launched
登录免费查看答案和解析

.Thecountryhasalreadysentupthr