题目

— I've got something weighing on my mind. Could you give me some advice? — ______. Tell me all about it and I'll do what I can. A . Don't mention it B . No wonder C . No problem D . My pleasure 答案：C五?一班为希望工程捐款a元，五?二班的捐款是五?一班的1.3倍，两个班共捐款2.3a2.3a元．