问题
选择题
---- Would you have gone shopping had it been possible?
---Yes, but I ___ busy doing my homework.
A．was
B．were
C．had been
D．would be
答案
A
问句是一个与过去事实相反的虚拟语气，答语中的 “but”, 引出了一个过去事实,说明不去购物的理由。
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