The smoggy weather has made us realize       terrible problems we are laced with．

＿＿＿buy your ticket from a ticket machine. There are lots of people there.

 If you have a job，________ yourself to it and finally you'll succeed.(2010·四川)

Let’s ____  volleyball.               - That sounds good

—I’m leaving now. —________ you turn off the lights and the computer.