It always ___(rain)when I am not learning.这题是完形填空,答案写的是rains.但是为什么不能填raining呢?
问题描述:
It always ___(rain)when I am not learning.
这题是完形填空,答案写的是rains.但是为什么不能填raining呢?
答
It always 'rains' when I am not learning
答
用raining要两个空 is raining