问题补充:
--Mum, we have to buy some more salt.
-- .There is enough salt in our country.
A. Why not?
B. Sure.
C. I think so.
D. Don’t worry.
答案:
A. Why not?
B. Sure.
C. I think so.
(答案→)D. Don’t worry.
解析:四个选项分别表示为什么不、当然了、我认为是这样和不要担心,根据题意选D,不要担心,我们国家有足够的盐。