题目内容

Not until____________the exam _________ the importance of doing homework.

A.had he failed; he realized

B.he had failed; did he realize

C.he had failed; he realized

D.had he failed; did he realize

 

【答案】

B

【解析】略

 

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