题干

Not until ________ the house _________ that he had left the keys inside.
A.he left; realized heB.he left; did he realize
C.did he leave; had he realizedD.he had left; did he realize
上一题 下一题 0.4难度 单项选择 更新时间:2018-12-08 03:04:05

答案(点此获取答案解析)