Her son drink Coke a lot but now he likes drinking milk. A. used to B. is used to C. us

问题补充：

Her son drink Coke a lot, but now he likes drinking milk.

A. used to B. is used to C. uses to

答案：

解析：本题的含义是她的儿子原先经常喝咖啡，used to+动词原形可以表示以前或曾经的意思，符合本题的含义，故本题选A。