问题
选择题
After_________walk，they all felt tired.
A．three hours
B．three-hours
C．three hour’s
D．three hours’
答案
D
表时间的名词所有格用’s式，且以s结尾的复数名词所有格只加’，s省去。
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After_________walk，they all felt tired.
A．three hours
B．three-hours
C．three hour’s
D．three hours’
D
表时间的名词所有格用’s式，且以s结尾的复数名词所有格只加’，s省去。