It be better if I could earn enough money to buy a private car.A. willB. mustC. shallD. w

问题补充：

It be better if I could earn enough money to buy a private car.

A. will

B. must

C. shall

D. would

答案：

A. will

B. must

C. shall

(答案→)D. would

解析：考查虚拟语气。句意：如果我能挣到足够的前买一辆私人轿车可能会更好。结合语境可知主句是对现在的虚拟，故用过去时态的助动词加动词原形，选D。