---Which would you like tea or coffee ? -----Either OK but I prefer coffee milk .A

问题补充：

-----Which would you like , tea or coffee ?

-----Either OK , but I prefer coffee milk .

A .is ,with B. is, to C. are , with

答案：

解析：句意：茶和咖啡，你想要哪一个？哪一个都可以，但是与牛奶相比我更喜欢咖啡。Either或者这个，或者那个，后跟谓语动词三单；prefer…to…与……相比更喜欢……，故选B。