问题补充:
Jack always sleeps late on Sundays. I am sure he when we get home.
A. is still sleeping
B. is to be sleeping
C. will still be sleeping
D. will have been sleeping
答案:
A. is still sleeping
B. is to be sleeping
(答案→)C. will still be sleeping
D. will have been sleeping
解析:可联系答.案.网客服索取。