In the good care of the nurses the boy is recovering from his heart operation.A. quietly

问题补充：

In the good care of the nurses, the boy is recovering from his heart operation.

A. quietly

B. actually

C. practically

D. gradually

答案：

A. quietly

B. actually

C. practically

D. gradually

解析：考查副词词义。根据生活常识，手术后的恢复应该是“逐渐的”，故选D。