.UNESO is an international organization ,which _____ United Nations Educational, Scientific and Cultural Organization.

There are _________ floors in the building and my home is on the _________ floor.

cycling is a fantastic way to burn a few calories and save some money, there still exist risks

cannot smile like a child, __________ a child smiles with hiseyes, while a man smiles with his lips alone

下列句子中画线词的意义和用法，完全相同的一组是（ ）