作业帮 > 综合 > 作业

You ______ the examination again since you had already passe

来源:学生作业帮 编辑:神马作文网作业帮 分类:综合作业 时间:2024/11/10 12:57:08
You ______ the examination again since you had already passed it.
a.needn’t have taken b.didn’t need to take c.needn’t take d.mustn’t take
选什么?为什么答案是B,错了么 since引导的从句时,主语一般不是多为完成时么?这样的话,即使不是A但也是C对啊 ,不应该是B吧?
need是情态动词
You ______ the examination again since you had already passe
SINCE在这里是因为的意思 后面过去完成时 前面过去时 选B