–I telephoned him twice but I couldn’t get through to his home.
--I think that the line might have been out of order, ______ ?
A. doesn’t it B. wasn’t it C. don’t you D. hadn’t it
–I telephoned him twice but I couldn’t get through to his home.
--I think that the line might have been out of order, ______ ?
A. doesn’t it B. wasn’t it C. don’t you D. hadn’t it
B
情态动词+have done 其后的反义疑问句，有表示过去的时间状语时，由主要动词决定用did、was获were，没有时间状语时借助于have。此题在对话中暗含了过去的时间状语，因此选B。