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After walk.they all felt tired. A.three hours B.three-hours C.three hour’s D.thr

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After walk.they all felt tired. A.three hours B.three-hours C.three hour’s D.thr

After_________walk,they all felt tired.

A.three hours                                     B.three-hours

C.three hour’s                                    D.three hours’

试题答案

D?

解析:

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。?