---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
网友回答
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。