It took her to cook the delicious food.A. three and a half hourB. three and a half hours C

问题补充：

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

答案：

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。