－Ican'tfindMary.Where'sshe? －Sorry,Idon'tknow

问题详情：

 －I can't find Mary. Where's she?

 － Sorry, I don't know _______.

 A. where has she been           B. where has she gone     C. where she has gone

【回答】

C

知识点：宾语从句

题型：选择题