---Must I take this medicine Mom? It so terrible.---Yes you must take it for another t

问题补充：

---Must I take this medicine, Mom? It so terrible.

---Yes, you must take it for another three days.

A. is tasting

B. is tasted

C. tastes

D. has tasted

答案：

A. is tasting

B. is tasted

(答案→)C. tastes

D. has tasted

解析：动词考查题。taste为系动词“尝起来”没有被动语态没有进行时态，用主动形式表被动。句意：妈妈，我必须吃这种药吗？太难吃了。是的，你必须再服用三天。