If my lawyer ______ here last Saturday, he ______ me from going.

If my lawyer ______ here last Saturday, he ______ me from going.

A.had been; would have prevented

B.had been; would prevent

C.were; would prevent

D.were; would have prevented

答案及解析： A

解析：

此句是一个表示与过时事实相反的虚拟语气。