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

Question

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

A. will be

B. can

C. will have been

D. have been

Answer 1

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。