It took him to find the key to the drawer. A. one and half hoursB. one and a half hoursC.

问题补充：

It took him to find the key to the drawer.

A. one and half hours

B. one and a half hours

C. one and a half hour

D. one and half hour

答案：

A. one and half hours

(答案→)B. one and a half hours

C. one and a half hour

D. one and half hour

解析：句意：他花了一个半小时找到这个抽屉的钥匙。一个半小时one and a half hours。故选B。