当你想说“该到上学的时间了”,你应说:______
A:It's time to go home.
B:It's time to go to school.
— I am going to go fishing ____ Sunday.
矩形ABCD满足AB=2,AD=1,点A、B分别在射线OM,ON上,∠MON为直角,当C到点O的距离最大时,∠BAO的大小为( )