问题
选择题
On the next birthday.Ann married for twenty years.
A．is
B．has been
C．will be
D．will have been
答案
答案：D
这题考查时态的用法：时间是On the next birthday，而且还有for twenty years，是：到下一个生日，安将已经结婚20年了。选D。将来完成时。
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