一道关于虚拟语气的英语选择题If I had worked harder at school...答:选择B,2,if 过去完成时 ,主句过去将来完成时 B,0,B if 后Had done,主句用would have done,0,后面有now.应选C 为错综条件句,0,一道关于虚拟语气的英语选择题 If I had worked harder at school,I ___ in a fortable office now.A.would sit B.would have sit C.would be sitting D....