--How are your business goes wrong? ---But I have done all that is by law.
My trousers are too old. I’ll have to buy ___.
40. — I’m afraid I failed in the contest.— _______. At least you tried.
39. _______ is certain, people’s living conditions in China have improved a lot since the 1980s.
38. Li Ming, as well as some of his classmates, ______voluntary work now.
37.After _______ the area for three hours, the police found the truck near a river.