That was a difficult question, but Mary still（）to work it out.
A:did
B:failed
C:kept
D:managed
出自：专升本

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:【10223425】个 (题库试题定时更新)