By the time you finish your homework, all of us______ours at hand, I'm sure.
A、
will finish
B、
will have finished
C、
have finished
D、
have been finishing
【正确答案】
B
【答案解析】
解析:本题考查时态的用法。the time you finish your homework是一个将来的时间,时间状语为by+将来的时间,后面的句子要用将来完成时,故本题选B。
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