One year has passed ____the earthquake happened.A.since B.when C.before D.that为什么

One year has passed ____the earthquake happened.A.since B.when C.before D.that为什么
One year has passed ____the earthquake happened.A.since B.when C.before D.that
为什么

One year has passed ____the earthquake happened.A.since B.when C.before D.that为什么
答案选A,one year has passed是现在完成时,而现在完成时可以用来表示发生在过去某一时刻的,持续到现在的动作（用行为动词表示）或状态（be动词表示）常与for（+时间段）,since（+时间点或过去时的句子）连用.

我觉得应该选A

A

A

A
现在完成时的用法 啊since引导的