一道语法题 in the past decade,geologists have come clo
问题描述：
一道语法题 in the past decade,geologists have come clo
一道语法题
in the past decade,geologists have come closer than ever to ( )the age of the earth
为什么是 calculating不是calculate
答
come closer to：更接近.；走得更近
介词to后需接动词ing形式