---Where’s your mother? ---Oh, she Shanghai on business.
A. have been to
B. have gone to
C. has been to
D. has gone to
网友回答
A. have been to
B. have gone to
(答案→)C. has been to
D. has gone to
解析：根据Where’s your mother?说明她 不在这儿，用has gone to sp表示某人已经去了某地或正在去某地的路上，反正不在这儿，故选C