——— Ring me at six tomorrow morning will you? ——— Why that early? I . A. will be sleepin

问题补充：

——— Ring me at six tomorrow morning， will you?

——— Why that early? I .

A. will be sleeping

B. have slept

C. have been sleeping

D. will sleep

答案：

(答案→)A. will be sleeping

B. have slept

C. have been sleeping

D. will sleep

解析：考察一般将来进行时，“那时我可能正在睡觉” 。