如题所述
第1个回答 2016-04-03
括号里填" ' ",
a three-hours' walk.请采纳
a three-hours' walk.请采纳
第2个回答 2016-04-03
a three-hour walk
three hours' walk
three hours' walk
步行三个小时的路程本回答被网友采纳
three hours' walk
three hours' walk
步行三个小时的路程本回答被网友采纳
