问题补充：
Kate didn’t come yesterday, or you her.
A. would see
B. were to see
C. had seen
D. might have seen
答案：
A. would see
B. were to see
C. had seen
(答案→)D. might have seen
解析：考查与过去事实相反的虚拟语气。它的主句构成为would/could/might +have done 结构，故选C，句意：凯特昨天没来，不然的话你就可能看见她了。
