问题
选择题
We would have called a taxi yesterday if Harold __________us a ride home.
A．didn’t offer
B．wouldn’t offer
C．hasn’t offered
D．hadn’t offered
答案
答案：D
考查虚拟语气的条件句。would have done 表明是对过去的虚拟，所以条件句需要用had done。
句意：昨天如果哈罗德不主动开车送我们回家的话，我们就要打的了。