Remember to turn off the lights before leaving the classroom, children.— .

_____ news! Our college will go to Beijing for a _____visit this autumn.

what a pity! All the tickets weresold out.――I’m sure we_______ two, but you were notquick enough.

32Tens of thousands of trees _____ in the area in the past few years

30．QQ,______you can chat with your friends, makes communication easy