12. ----Did Jack take the doctor’s advice that he in bed for a couple of days?----If only

问题补充：

12. ----Did Jack take the doctor’s advice that he in bed for a couple of days?

----If only he .

A. lies; does

B. lay; did

C. lie; did

D. lie; had

答案：

A. lies; does

B. lay; did

C. lie; did

(答案→)D. lie; had

解析：考查动词用法和虚拟语气。句意：---杰克是否采纳了医生的建议，在家里躺了几天？---要是他真那样做就好了。第一空考查advice的同位语从句，用should+动词原词，should可以省略所以选lie，第二空If only后表示虚拟，与过去事实相反选择had done。