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。