If you want people to treat you nicely, you have to treat nicely, too.

Is that colourful pencil-box Bob’s ? – No, it isn’t __________. It’s _________,

I like to have friends who are different _____me.[ ]

I wonder when they ___ for Beijing. I will go to the train station to see them off whenthey ______.

The teaching building has five floors. My classroom is ________ the third floor. [ ]