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By the time you arrive, I ______ working for two hours A. will be B. can C. will h

题目

By the time you arrive, I ______ working for two hours

A. will be

B. can

C. will have been

D. have been

参考答案
正确答案:C
     9.此题考查的是时态,将来完成进行时。一直做到将来的这段时间,而且该动作可能还要继续。选项C是正确的。