看到一个句子,where has she come from?为什么用has 呢?

看到一个句子,where has she come from?为什么用has 呢? 1.Where （ ）she come from?A.doB.doesC.amD.is2.（ ）of us has an Where has she been? where has she she has come bace where does she come from为什么有FROM where has this letter come from能把has换成is吗? she has put eraser where she has come up with. amy has no idea ()she should spend为什么用where,what,how为什么不可以 请问为什麽一样的句子,却一个用she has got,一个用 she has She has gone to Shanghai?对Shanghai提问怎么说?是用Where has she gone