He didn't give up the plan though he______many times.为什么要填has failed呢?还是had failed

分类: 作业答案 • 2021-12-19 23:59:14

问题描述：

He didn't give up the plan though he______many times.
为什么要填has failed呢?
还是had failed

答

前面都是did了,后面肯定不是has