---Where’s your mother?-Oh she Shanghai on business.A. have been toB. have gone toC.

问题补充：

---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

答案：

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