问题
选择题
By the time you come back, your aunt ______ for Nanjing to attend a meeting.
A．will leave
B．leaves
C．left
D．will have left
答案
答案：D
考查时态，by+时间状语，句子通常用完成时态，根据从句By the time you come back,可知指将来，所以用将来完成时。选D。
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