男性，43岁，以昏迷，尿失禁半小时被送入医院。多汗，流涎、血压150/90mmHg，双瞳孔缩小，直径1mm，全身肌肉颤动，双肺可闻及湿性啰音，心率78次/分，律齐，无杂音。患者最可能的诊断是（）

A.一氧化碳中毒

B.有机磷农药中毒

C.安眠药中毒

D.蛛网膜下腔出血

E.癫痫持续状态

—John saw a three-year-old child walking alone in a shopping mall , so he took the child home immediately and called the police .

—But he           have waited with the child until the parents returned .

A．shouldn’t

B．could

C．would

D．might