Where is Peter I don't know where he has ____ gone还是been ,请详解,

问题描述:

Where is Peter I don't know where he has ____ gone还是been ,请详解,

楼上正解。

gone been是指去了已经回来了 gone是去了未回来 这题指peter去了哪里他不知道 所以是没有回来的