题目内容：
Cuts in funding have meant that equipment has been kept in service long after it ________ replaced.
A．should have been B．would have been
C．could have been
D．might have been
参考答案：
答案解析：
单选题：Cuts in funding have meant that equipment has been kept in s
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B．would have been
C．could have been
D．might have been