The Chinese ____7_____ chopsticks for five thousand years. People probably cooked their food in large pots, ______8___ twigs( 树枝 ) to remove it. Over time, _____9____ the population grew, people began cutting food into small pieces so it would cook more quickly. Food in small pieces _____10____ with twigs which gradually turned into chopsticks. 7. A. had used B. used C. have used D. have been used 8. A. to use B. used C. using D. had used 9. A. as B. as soon as C. before D. after 10. A. can be eaten more easily B. should be eaten easier C. must be eaten easier D. could be eaten easily ( 广州市育才中学 2017 学年第二学期初三级中考模拟考英语 ★★★★ )