问题补充：
The teachers hope all of us can hand our homework time every day.
A. up; in
B. out; on
C. on; in
D. in; on
答案：
A. up; in
B. out; on
C. on; in
(答案→)D. in; on
解析：hand up举手，呈交上级；hand out分发，施舍；hand in提交，呈送；in time及时；on time按时。句意：老师们希望我们所有人每天都能按时上交作业。结合语境可知选D。
