we should do everything we can to protect the env ironment.句中ever_其他解答

we should do everything we can to protect the env ironment.句中everything we can 能用什么替代
遇到这样一道选择题,我主观认为what we can 与what we can do 都可,前者更简练.但答案是后者,为什么?恳请高人指点.

人气：121 ℃　时间：2019-08-19 14:50:59

解答

we should do everything ( we can)to protect the environment.
我问所能做的一切,要体现出“做”
what we can没动词是不可以的.