题目内容：

He has been to America.对America提问. __ __ __ he been __?

优质解答

这道题是不是出错了啊?我知道做这种题的诀窍!先把已知的句子变为一般疑问句：Does he have been to America?然后对America提问应该用where,把where放到句首：where does he have been to? 可是你的和...