专题限时训练(一) [名词与冠词(一)] (限时：10分钟) 1．we can never expect ________bluer sky unless we create________ less polluted world. a．a; a b．a; the c．the; a d．the; the 2．if you keep on writing, you will have________brighter future, likely to become________j. k. rowling.
