职教组卷基于海量职教高考试题库建立的在线组卷及学习系统

网站首页帮助中心注册

当前：英语

题型：英语知识运用题类：月考试卷难易度：中档

测

Ten astronauts ________ into space since China's first astronaut Yang Liwei succeeded in his space trip in 2003.

A. have been sent B. have sent C. had sent D. had been sent

相关试卷

微信服务号

联系电话

18165375674