A、  B、  C、  A题目为确认油价是否下跌的反意疑问句。

Do you have time today, or should I come back tomorrow?
(A)I’m sorry, but I don’t wear a watch.
(B)Yes, you’re very welcome.
(C)Tomorrow, if you can.

The price of oil just went down, didn’t it?
(A)That’s what I heard on the news.
(B)It’s starting to boil.
(C)Yes, it’s downstairs.