单选题Just after putting the&nb

问题补充：

单选题Justafterputtingthebabyontobed,Mrs.Whitesuddenlycaughtsightofthepetcatanddidn’tknowhowlongit________onthetableforthefamilydinner.A.had been laying; lyingB.had been lying; laidC.had been laid; laidD.had lain; laying

答案：

B解析had been lying为过去完成进行时，表示一个动作或状态从过去开始一直持续到过去的某个时间，该句表示状态，而had been laid强调动作，laid为lay的过去分词，修饰限制the table。