The United States is composed of fifty states,two of__are separated from the others by land or waterA them B that C which D those,为什么答案是C呢?选A不可以吗?相当于中文的“它们”,英文中的them只能指人,不能指物吗?

the united states is a d---- country Then the United States is also inju new york is in the United States对in the United States提问 New York? THE UNITED STATES OFAMERICA (U )is the short from of the United States. The United States is different_____ other parts of the world What is the goal of education in the United States Which universities is the oldest in the United states? The goal is to banish extinction from the United States. The United States is different(from )other parts of the world,The United States is different(from Why is the United States known as a melting pot And it helped make the United States what it is Canada is south of the United States. 翻译成汉语 She is going to the United States in May He is form the United States的同义句是什么 He is from the united states的同义句 Lies again the United States,after all,is a the United States 和 the United Kingdom