问题描述：
这句话当中的it是作什么语法成份?
In England,it is not only the rich who can take their children to the seaside; if a fatory worker or a bus driver,a street cleaner or a waiter wants to take his wife and children to Southland ormargate,he is usually quite able to do so.
In England,it is not only the rich who can take their children to the seaside; if a fatory worker or a bus driver,a street cleaner or a waiter wants to take his wife and children to Southland ormargate,he is usually quite able to do so.
问题解答：
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