1. Protection of the environment has become a major _________ of the whole society.2. The manager often _________ his wife to take care of the car company in his absence.3. Jack _______ so much work that he couldn’t really finish it in time.4. Like most married couples we’ve had our _____________, but life is always like that.5. Bungee jumping (蹦极) has a lot of fun. It makes me _________ just to watch someone do it.6. The old professor helps people without expecting anything __________.7. A __________ of humor enables him to get along well with others.8. The terrible pollution has done great harm to the _____________.9. The main body of the book deals with the author’s political ______.10. If we can ____________ our present difficulties, then everything should be all right.