- You aren't supposed to smoke in public. It's bad for our health.
- Sorry, I will ______ my cigarette right now.
A:give up
B:put down
C:put out
D:give away
生活的润滑剂是 ()
下列属于同种物质的是()
边长为5,7,8的三角形的最大角与最小角的和是( )