题目内容

 He failed the midterm examination and only then ________how much time he had wasted.

A. he realized                B. did he realize

C. he had realized             D. had he realized

练习册系列答案
相关题目

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网