问题补充：
—Welcome to my home! But why didn’t you pay a visit to me last time?
— I would have, but I your address.
A. have forgotten
B. would have lost
C. forgot
D. had lost
答案：
A. have forgotten
B. would have lost
(答案→)C. forgot
D. had lost
解析：考察时态和虚拟语气。句义：—欢迎来到我家！为什么你上次不来看我？—我本想来的，但是我丢了你们家的地址。根据前句的would have可知本句是对过去情况的说明，But后面的句子使用陈述语气，使用一般过去时。C正确。
