But McDonald's is a fast-food __1__. When I think of fast-food I think of words like“junk food”,“poor nutrition（营养）”and“overweight（超重）”. Almost everyone will say fast food is __2__, but they still eat a lot of it anyway. Yesterday I learned how __3__ this was.

　　At school we saw a video, called“Supersize Me”. A man decided to study what would happen to a person who ate McDonald's food all the time. So, he ate it, three __4__ a day, for a month. By the end of the month he had put on（增加）more than twenty pounds. He had fat in his liver（肝）and blood, he lest some muscle（肌肉）, felt __5__ all the time and couldn't help wanting hamburgers. The video said that it took the man about half a year to lose the weight he had put on.

　　The video also said that America is one of the __6__ countries on earth. About one in every four grown-ups is overweight. Will it slowly get to the schools? Maybe it will. Most high schools already have vending machines（自动贩卖机）with soda and other junk food. Their cafeterias sell __7__, pizza and hot dogs. Some schools don't even have PE classes.

— How 　　　　 will the boss be back?

— In these days.

　 A. far　　　　　　 B. soon　　　　　　 C. long　　　　　　 D. often