【题目】 —Do you have Betty's phone number?
—Yes. Otherwise, I ______able to reach her yesterday.
A.hadn't been
B.wouldn't have been
C.weren't
D.wouldn't be

【答案】B
【解析】句意：——你有贝蒂的电话号码吗？——有。否则的话我昨天就不能联系上她了。这是一个虚拟语气，句中的yesterday是过去时间，otherwise相当于虚拟条件句if I hadn't had her phone number，主句用would have+过去分词的形式。故选B。