问题
选择题
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
答案：B
题目分析：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。
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