11.　 The island 　　　　　　　　　　　　　　　(与……连接) the mainland by a bridge．(join)

20. 　　　　　　　　　　　　　　　　　　　　(不管你怎样努力), you can hardly achieve your goal. (however)

专题训练 (4)

19. We 　　　　　　　　　　　　　　(或许还没有证明是) great adventurers, but we have done the greatest march ever made in the past ten years. (may)

18. Police are now searching for a woman 　　　　　　　　　　　　　　(据报导已经失踪了) the flood hit the area last Friday. (report, missing)

17. 　　　　　　　　　　　　　　　(太调皮了) the child that he often upsets his parents who are busy with their work. (so)

16. He got up and 　　　　　　　　　　　　　　　　　　(穿好衣服), and hurried out. (get)

15. Whenever he was asked why he was late for class, he would answer carelessly, ______________________　　 　　　　(老是讲着) the same thing.(say)

14. When 　　　　　　　　　　　　　(比较不同的文化)，we often pay attention only to the differences without noticing the many similarities. (compare)

13. Although the causes of cancer 　　　　　　　　　　　(在逐步弄清楚)，we do not yet have any practical way to prevent it. (uncover)

12. The film was a big success and since then I 　　　　　　　　　　　　(扮演了) a policeman in more than 8 films. (part)