A:permissio
B:protectio
C:predictio
D:preventio
I __________ a new schoolbag.
如图,公路AC,BC互相垂直,公路AB的中点M与点C被湖隔开.若测得AM的长为1.2km,则M,C两点间的距离为( )
Sir, you should__________ at the red light.But you didn't.