题干
— You haven’t said a word about my new coat,Brenda.Do you like it?
—— I’ m sorry I ＿＿＿＿＿＿ anything about it sooner.I certainly think it’ s pretty on you.
A：wasn’t saying
B：don’t say
C：won’t say
D：didn’t say
答案(点此获取答案解析）
D
的前
项和为
，已知
，
，则
（）