Ⅶ.根据句意及汉语提示补全单词
【小题1】The country has a ______ (人口) of 100 million.
【小题2】Don’t make any ______ (噪音) when you are in the library.
【小题3】The Williams live in a ______ (公寓) close to the centre of the city.
【小题4】Our job is to clear away the ______ (垃圾).
【小题5】One ______ (七分之一) of the farmland has been planted with oil crops.