A:for
B:to
C:in
D:about
—Hey, Kelin. Happy new year! ______?—Ok, I guess. My grandma kept cooking and cooking, so I just kept eating.
一个两位数从右边起第一位是____位,第二位是____位.
将△ABC的三个顶点的横坐标乘以-1,纵坐标不变,则所得图形( )
中国古代选官制属于魏晋南北朝的是( )