Could you help me carry the box?B.Yes,l could.C.No,I can't.

- Could you help me carry the box?
- Yes,with pleasure / No,I can't / Sorry,but I can't ./ Yes,of course.
再问： Yes, with pleasure / No, I can't 应该用哪一个呢？
再答： nihao.应该是：- Yes, with pleasure 或者-Sorry, but I can't . -------看你的具体情况。