where has you been in Shanghai 为啥has been to的to被省略了呢

where has you been in Shanghai 为啥has been to的to被省略了呢 has been to和has been in 的区别 Where is Li Lei?He Shanghai.A.has gone to B.has been to C.we My uncle has been to Shanghai ----------- 求has been for的具体用法和与has been to,has gone to, has been in, ha has been in、has been to、has gone to、has been gone的区别（详解）.急知! has been to,has gone to ,has been in 的区别 has been to has gone to has been in 的区别、分别举几个例子 has been to has gone to has been in 的区别 has been to,has gone to,has been in的区别 he has been abroad. 为啥不是has been to. 不是has been to 表示去过哪么 为啥 Where to go tomorrow has not been