It took her to cook the delicious food.
A. three and a half hour
B. three and a half hours
C. a half and three hour
D. three hour and a half
网友回答
A. three and a half hour
(答案→)B. three and a half hours
C. a half and three hour
D. three hour and a half
解析：句意：做这个美味的事物用了他三个半小时的时间。本题中是three和half做定语修饰hours，选B，其它选项结构有误。