—I will pick you up at 6 tomorrow morning.
—So early! I then.
A. will sleep
B. will have slept
C. will have been sleeping
D. will be sleeping
网友回答
A. will sleep
B. will have slept
C. will have been sleeping
(答案→)D. will be sleeping
解析： 句意：--我明天早上6点会去接你。--这么早！那时我将正在睡觉。Then指的是at 6 tomorrow morning.所以用将来进行时，选D。