2个英语小题6\Two of the little girls have to sleep in one bed,but

2个英语小题
6Two of the little girls have to sleep in one bed,but the other three in( )ones.
A.longelyB.aloneC.differentD.separate
7"She is( )fifteen years ord.''means"She is fifteen years old.''
A.no less than B.no more than
请在每个题后写上解析,
乱蒙的孩子不要答，关键的是解析。乱答的孩子，你们占的空间还要留给别人那！