we know this area,two hundred years ago,was a lake__

题目

we know this area,two hundred years ago,was a lake__
two-thirds of the size at present
two-thirds its present size
要说为什么

答案

选2
two-thirds its present size 修饰lake~
说明是这个湖现在的尺寸只有它原本its的2/3~