My doctor advised me to reduce the amount of sugar to the milk I drink.A. addB. to addC.

问题补充：

My doctor advised me to reduce the amount of sugar to the milk I drink.

A. add

B. to add

C. adding

D. added

答案：

A. add

B. to add

C. adding

(答案→)D. added

解析：句意：我的医生建议我喝牛奶时，减少添加糖的量。动作add与其逻辑主语sugar之间是被动关系，故用过去分词作定语，选D。