When did you him? A. know B. knowing C. get to know D. get to knowing
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When did you ___ him?
A. know B. knowing C. get to know D. get to knowing
试题答案
C
解析:
know是持续性动词。一般不用when来提问持续性动词，而get to know就解决了这问题，D项语法结构错误。