13. _________________(面对)fierce competition, we have no choice but to work hard.(face)

12. He wrote a book saying that the honor should ______________________(属于中国人).(go)

11. __________________________________(一旦泼出去了), water　 can　 not be taken back again. (pour)

20.　 Look! Here ______________________________________________(公汽来了). (come)

19.　 It is the second time that I __________________________________ (访问)China. (visit) 教育博客

18.　 _____________________________ (一到达)the factory, they got down to work. (arrival) 教育博客

17.　 With the help of his teacher, he _____________ (取得了很大进步)in English so far. (make) 教育博客

16.　 _______________________________________(尽管他是一个孩子), he knows a lot. (as) 教育博客

15.　 Competition _________________________________ (与…密不可分)cooperation. (hand)

14.　 This piece of music is well worth ___________________________________(听). (listen) 教育博客