问题
选择题
Something has to be done to stop the rivers from being further polluted, ?
A．doesn’t it
B．hasn’t it
C．does it
D．has it
答案
答案：A
题目分析：考查反意疑问句。Have/has/had to表示“不得不，必须”时，反意疑问句用don’t/doesn’t/didn’t。不定代词Something作主语，反意疑问句用it。故选A。