问题
选择题
I think that something has to be done to stop the air from being polluted, ______ ?
A．doesn't it
B．don’t I
C．don't they
D．haven't they
答案
答案：A
题目分析：考查反意问句：句意：我想为了阻止空气被污染，要采取一些措施了。一般主句的主语是第一人称反义疑问句用从句中的提问，陈述部分有has to +v. ，疑问部分常用doesn't +主语，选A。