Something has to be done to stop the nationwide disease from spreading, ?A.doesn
来源：网络
时间：
推荐文章
Something has to be done to stop the nationwide disease from spreading, ________?
A.doesn't it
B.hasn't it
C.don't they
D.haven't they
试题答案
A
句子的主语something是一个不定代词，看作第三人称单数。用it来指代。have to的否定和疑问都应该用助动词do来表示。