您现在的位置是:首页 > 学科知识查询 > 高中英语题库

The telephone had been ringing for several minutes before it .A.answeredB.was answeredC.was answerin

编辑:chaxungu时间:2026-04-24 13:01:50分类:高中英语题库

The telephone had been ringing for several minutes before it ________.
A.answeredB.was answeredC.was answeringD.had answered在线课程B