if you open the door ,you will find the ground ————with deep snow

问题描述:

if you open the door ,you will find the ground ————with deep snow
——————横线处,为什么答案是covered 而不是covering
要是题目这么改呢
if you open the door you will find Lily ————with the ball
——————横线处,答案是playing 还是played,还是play?

因为the ground 和snow 是被动的关系,所以我们用covered.