Question

6. ―How dangerous it was ！

―Yes, but for the passer-by's quick action, the girl   

A.    had been drowned

B.    might be drowned

C.    would have been drowned

D.    must have been drowned

Answer 1

6.    C考查虚拟语气。句意："多么危险啊！""是的，要不是那位过路人动作快，那个女孩就会被淹死了。"此处表示与过去的事实相反，用would have done的形式。