David didn’t give up _________ he had failed in the experiment four times. A. if B. so C. though D. ...
2022-11-08 15:50:49 53次 四川省眉山市仁寿县2017年中考模拟英语试卷（一） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
David didn’t give up _________ he had failed in the experiment four times.
A. if B. so C. though D. and
本题链接：
