We can never expect _______bluer sky unless we create ______ less polluted world.

---He is______ a brave man. ---we can’t admire his courage ______.

We’d better _____ some sports because sports can give us a perfect build and protect us from getting illness easily.

 Through educating himself and strengthening his own will power, every individual should be able to ________ the temptation of cigarettes.

 It seems that the young man and the lady have little __________.