John received an invitation to dinner, and with his work______, he gladly accepted it. [ ]

A. finished

B. finishing

C. having finished

D. was finished

关于甲硝唑下列叙述错误的是（）

A.溶组织内阿米巴对其尚无明显的耐药性

B.对无症状带包囊者无效

C.不良反应较多，可引起畸胎

D.口服吸收迅速而完全

E.最常见的不良反应为恶心、呕吐、腹泻等消化道症状