— Why did you come by taxi?

— My car broke down last week and I still _____ it repaired. [ ]

A. didn't have

B. hadn't had

C. haven't had

D. won't have

患者腹泻1天，4～5次水样便，无明显里急后重。便常规：脓细胞0～2个/HP，红细胞1～3个/HP。涂片染色见革兰阴性弯曲且排列成鱼群状细菌，悬滴法见运动快的细菌。最大可能诊断是（）。

A.霍乱

B.阿米巴痢疾

C.细菌性痢疾

D.肠滴虫病

E.急性肠炎