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What_______whentheywalkedpastthestreetcorner?__________Therewasatrafficaccident.A.wouldhappenB,happenCc.washappeningD.hashappenen选哪个?
题目内容：
What_______when they walked past the street corner?__________There was a traffic accident.
A.would happen B,happen Cc.was happening D.has happenen
选哪个?优质解答
选C,表示街角发生了什么?
A.would happen B,happen Cc.was happening D.has happenen
选哪个?
优质解答
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