问题
选择题
By the time he arrives in Tianjing, we ____ here for two days.
A．have stayed
B．have been staying
C．stay
D．will have stayed
答案
答案：D
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By the time he arrives in Tianjing, we ____ here for two days.
A．have stayed
B．have been staying
C．stay
D．will have stayed
答案：D