He stood up to see what ___ to that woman A.happen B.was happening C.was happened D.is happening
问题描述：
He stood up to see what ___ to that woman A.happen B.was happening C.was happened D.is happening
答
选B
宾语从句,主句是过去时,从句用过去相关A和D排除
站起来看那个时候正在做发生什么···因此用C
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