问题
选择题
Your headmaster would have been happy to give you two days off, if you had gone and explained that your parents ________ ill at the time.
A．were
B．had been
C．are
D．would be
答案
答案：A
答案：A 考查时态。句意：如果你那时候去向校长讲清楚，你父母病了，他会乐意给你两天假的。本题中主句表示的是对过去的虚拟，虚拟条件句也表示对过去的虚拟，但虚拟条件句中的宾语从句表示的是过去的事实，故其谓语用一般过去时态。