Question

Yes．We have to say we are now facing unexpected difficulties ahead, but we firmly believe nothing can stop us from serving the people heart and soul, ________?

1. A.
   can it
2. B.
   cant it
3. C.
   can they
4. D.
   cant they

Answer 1

A
陈述句部分有否定词nothing，附加部分用肯定形式。另外，习惯用it指代nothing，some-thing，everything等不定代词。