If only the committee _____the regulations（规章）and put them into

If only the committee _____the regulations（规章）and put them into effect as soon as possible.
A、approve
B、will approve
C、can approve
D、would approve
【正确答案】：D
【题目解析】：考查虚拟语气。句意：要是委员会尽快批准这些规章制度并付诸实施就好了。由if only引导的句子需用虚拟语气形式，此处表示现在情况的虚拟语气，应用“would＋动词原形”的形式。