The company had about 20 notebook computers but only one-third __________ usedregularly. Now we have 60 working all day long.
Most of the wood ___ to make furniture.
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.