问题
选择题
I regret ________ that you have failed the exam, but what you should do now is not to regret ______ so
much time but to seize every moment from now on. [ ]
A. to inform; wasting
B. informing; to waste
C. to inform; to waste
D. informing; wasting
答案
答案：A
要求：根据上述材料，回答下列问题。