问题补充:
I don’t think they will help us, ?
A. do I
B. don’t I
C. will they
D. won’t they
答案:
A. do I
B. don’t I
(答案→)C. will they
D. won’t they
解析:考查反义疑问句。主句动词是think时,反义疑问句是对从句提问,I don’t think they will help us是否定前移,实际上是否定从句they will help us,所以反义疑问句句用肯定形式,上文用助动词will,反义疑问句也用will.所以选C。