By the time you return home, I _

By the time you return home, I _____ all the work.
A、would do
B、will have done
C、has done
D、had done
【正确答案】：B
【题目解析】：考查时态。根据题意，等到你到家的时候，我将正在睡觉。 表示对未来的猜测，用would have done