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题目内容
（国家开放大学-大学英语1）
Had you come five minutes earlier, you _________ the train to Birmingham. But now you missed it.
选择一项：
A.
could catch
B.
would catch
C.
would have caught
选择一项：
A.
could catch
B.
would catch
C.
would have caught
参考答案
