they have to _ the supply of water due to

问题描述:

they have to _ the supply of water due to
they have to _ the supply of water due to the drastic water shortage.
a.decline b.diminish c.vanish d.expand

b
deminish是减少缩小的动词
a是减少,名词 c是消失 不合题意 d是扩张 不合题意