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:根据at six tomorrow morning这个时间状语,可知这里是指从现在算起的将来某一时间按计划、安排将要进行的动作,故用现在将来进行时。表示明天早上六点我一定正在睡觉,所以用will be sleeping。