––The air is full of smoke and people are coughing.––It'll get worse ( ) the government does something about pollution.(
问题描述：
––The air is full of smoke and people are coughing.––It'll get worse ( ) the government does something about pollution.(本题分数：2 分.)
A、 but
B、 except
C、 besides
D、 unless
答
D,unless翻译成“除非”
空气中弥漫的烟尘使人们咳嗽.这种情况变得越来越糟,除非*对污染现象做出相应的措施