A:④—③—①
B:①—③—④
C:①—④—③
D:②—④—③
Who is the____(smart)boy in your class?
已知点P(1,3),将线段OP绕原点O按顺时针方向旋转90°得到线段OP′,则点P′的坐标是( )
The woman is d____ the tea now.