Robert failed three times () he finally reached the North Pole
Robert failed three times () he finally reached the North Pole
A until B before
是因为如果用until的话,前面要加not 原因,才选before的吗
A until B before
是因为如果用until的话,前面要加not 原因,才选before的吗
英语人气：312 ℃时间：2019-10-09 03:40:10
优质解答
是的.如果用until前面改否定
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