—Come on, baby! You will succeed. We all wish to get good news.
— but I'll do my best.
A. No problem
B. It is impossible
C. I can't promise
D. Don't worry
网友回答
A. No problem
B. It is impossible
(答案→)C. I can't promise
D. Don't worry
解析：C 考察交际愿意。由答语后的“我会尽力的”可知，前面选择C，指我不敢打包票。