选择方框内的单词完成下列句子, 使句子通顺、正确。 A. knowledge B. twentieth C. largest D. written E. hungry F uncomfortable. 小题1:Bruce is _______ , so he can’t go to school today . 小题2:He lives on the _______ floor . He uses a lift to go up and down. 小题3:China has the _______ population in the world . 小题4:The books _______ by Mr White are very interesting . 小题5:I’m not _______ , but I’m a little thirsty . 小题6:Our _______ of the universe is growing all the time .