单选题Then over dinner Franklin&nbsp

问题补充：

单选题Thenoverdinner,FranklinmentionsthathewellsincehegaveupsmokingandDrCandy,thelocaldoctor,offerstowritehimaprescriptionforsomemedicine.A.had not been sleepingB.has not been sleepingC.is not sleepingD.was not sleeping

答案：

B解析根据语法since是“自从……以来”，前面一般用现在完成时，表示一直睡不好，应用现在完成时的进行时。