(4分)I failed in the last exam and only then ___ the importance of studies.
A. I realized
B. I had realized
C. had I realized
D. did I realize
出自：兰州大学-大学英语3

提示：
同一【IP】的非会员用户每天可免费获取10次答案

收藏本站【zk.995w.com】，下次访问不迷路

本站试题总数:【10245403】个 (题库试题定时更新)