... send C. sent D. sending21. I asked her _________.A. what is the answer B. what the answer C. what was the answer D. what the answer was22. Can you tell me __________? A. what that is B. what ... D. to failure18. I regretted …… like that. I was sorry to have done so.A. to answer B. answering C. answer D. to answering19. “Do you like being married?”“Yes, but I’m not used …… every night.”A. ... what the answer is to that problem, whether this is a good way of saying or doing this or not.If it is a matter of right answers, as it may be in mathematics or science, give him the answer book....