— I to school at eight. What about your brother?
—He to school at seven thirty.
A:go; goes
B:goes; go
C:go; go
D:goes; goes
根据课文内容,回答问题。
青蛙的样子是:____
下列各种地形中,具有“海拔较低,地表平坦”特征的是( )
一组数据-3,-5,9,12,6,0的极差是____ .