(2011·江苏)The fact that so many people still smoke in public places ________ that we may need a nationwide campaign to raise awareness of the risks of smoking.

_____ of the students in our class _____ girls.

One third of the country ________ covered with trees and the majority of the citizens________black people.( 2011·湖南)

The writer and teacher as well as some of the students_____ a chance to go abord last year.

— Here      some photos of you.    —Thanks.