Question

11. Doctors strongly recommended that my father   more  exercise  regularly  instead of sitting still before a computer all day long.

A. takes       B. take

C. took      D.  had taken

Answer 1

11.   B考查虚拟语气。recommend表示"建议"的时候，后面的从句用虚拟语气，即"should+动词原形"，should可以省略， 故选B。