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职称英语
The conference______a full week by the time it ends.A、must have lastedB、will ha
The conference______a full week by the time it ends.A、must have lastedB、will ha
游客
2025-04-14
27
管理
问题
The conference______a full week by the time it ends.
选项
A、must have lasted
B、will have lasted
C、would last
D、has lasted
答案
B
解析
by the time到什么时候为止,是一个完成时的标志用语。根据英文“主将从现”原则,即主句和状语从句都是将来的动作,状语从句一般用一般现在时表将来,所以虽然句中用ends,表示的是将来的时间,故主句用将来完成时。句意是,到它结束时,大会将持续整整一周的时间。根据句意推出正确答案是A选项。
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