I ________ through that bitter period without your generous help. [      ]

A. couldn't have gone    

B. didn't go  

C. would go    

D. hadn't gone

这辆在道路上行驶的机动车有下列哪种违法行为？（）

A．逆向行驶

B．未按规定悬挂号牌

C．故意遮挡号牌

D．占用非机动车道