Question

—What’s your feeling now?
—I am terribly sorry. If only I      here yesterday!

A．came

B．would have come

C．have come

D．had come

Answer 1

D

考察虚拟语气，if only 意为要是……就好了，根据yesterday可知，该句是对过去的虚拟，对过去的虚拟用过去完成时。
句意为，---你现在感觉怎么样？----我非常抱歉，要是我昨天来就好了。