题目

13+（﹣9）﹣（﹣2）﹣7 答案：原式=13﹣9+2﹣7=15﹣16=﹣1； -- I doubt whether I can be admitted to my dream university in two months.-- ______. Everything is possible. [     ]A. Don't mention it  B. Never give upC. Behave yourself    D. It depends