Question

We ________ our lives had it not been for the policeman.

A．would have lost	B．should lose
C．might lose	D．had lost

Answer 1

A

因为had it not been for the policeman =" if" it had not been for the policeman (如果没有警察) ，显然是与过去事实相反的情况，主句中的谓语应是would have lost。