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

— 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→)A. has gone to, untilB. has been to, until C. has been to ,afterD. 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。

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