— Where ’s your mother ?— She Shanghai . She won’t be back next week .A. has gone to un

问题补充：

— Where ’s your mother ?

— She Shanghai . She won’t be back next week .

A. has gone to, until

B. has been to, until

C. has been to ,after

D. has gone to, after

答案：

(答案→)A. has gone to, until

B. has been to, until

C. has been to ,after

D. has gone to, after

解析：句意:你的母亲在哪儿?——她已经去了上海。直到下周她才回来。在完成时态中has been to 是已经去过某处，并且已经回来了。has gone to 是已经去了某处，但是到目前为止还没有回来。After在……之后；until直到，常和not一起搭配使用，not……until直到……才，结合语境可知选A。