If the operation（）carefully prepared, it would not have been successful. 选项 A:was not B:has not been C:had not been D:were not

If the operation（）carefully prepared, it would not have been successful.
选项
A:was not
B:has not been
C:had not been
D:were not

出自：英语一

提示：
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:【10253414】个 (题库试题定时更新)