问题
选择题
Mary failed the driving test again．If she ________ harder, she ________ the test easily．
A．practiced; would pass
B．had practiced; would pass
C．had practiced; would have passed
D．should practice; should have passed
答案
答案：C
题目分析：句意：玛丽又没有通过驾驶考试。要是她多加练习，她就能很容易地通过考试。表示与过去事实相反时，if从句谓语用“had＋过去分词”，主句谓语用“would＋have＋过去分词”。所以选C。