Htephen Hawing believes that the earth is unlikely to be the only planet____ life has developed graduallyA that B where C which D whose

问题描述:

Htephen Hawing believes that the earth is unlikely to be the only planet____ life has developed gradually
A that B where C which D whose

where 修饰the only planet

A 这是个planet的同位语从句用that引导

选B where
因为补充说明前面的planet,在从句里面是作为状语