单选题How did you know ___

问题补充：

单选题Howdidyouknow____A.what time does the meeting start ?B.why didn’t he come to meeting ?C.where they have the meeting ?D.who talked at the meeting ?

答案：

D解析本题主要考查宾语从句，由于主语是一般过去时，从句的时态应用过去时的相应时态，排除A、C；B