-Why didn't you come to Mike’s birthday party yesterday? ---Well, I , but I forg
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—Why didn't you come to Mike’s birthday party yesterday?
---Well, I ____, but I forgot it.
A. should B.must C.should have D.must have
试题答案
C
解析:
should have+过去分词可以表示过去应该做而没有做的事情。