By the time you get to Shanghai, I______ for Chongqing.
A.am leaving
B.will leave
C.shall have left
D.had left

A.A.am
B.will
C.shall
D.had

【参考答案】

C
解析：句意：在你明天到达上海之前，我已经去重庆了。考查将来完成时。根据句子中的时间状语从句by the ti......

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