Our school_________(hold) the Sino-US exchange culture activity several times.
问题描述：
Our school_________(hold) the Sino-US exchange culture activity several times.
答
several time 是现在完成式的标志,has heldschool是三单不对，是在线答题啊什么不对在线答题，答案对了才能下一题哦但的确是has held好吧怎么了过不去啊要不你是是过去式吧不对过去完成式had held不对我尽力了要不然就是那个题的答案错了不然就是我才疏学浅阿里嘎多