题干
Mary, you _________ finish your homework first, and then you can play with your friends.
A：maybe
B：may
C：might
D：should
答案(点此获取答案解析）
D
Mary, you _________ finish your homework first, and then you can play with your friends.
A：maybe
B：may
C：might
D：should
，长为2的线段
的一个端点
在
上
在底面
上运动.则线段
的轨迹与正方体的表面所
