12. __________________ (毫无疑问)that Taiwan is part of China. ( doubt )

11. In the late 1960s, the government passed laws to strengthened the rights of the black and __________________(改善他们的居住条件). ( improve )

20. Not until we know more______________________ (才能够)improve the situation. (able)

专题训练(21)

19. The role that women_________________________________(一直起的作用) in human history is of great importance. (play)

18. __________________(不管他有多少困难), he would finish the book as you requested. (how)

17. Chemicals ________________________________________(有害的) fish in the water. (harm)

16. My hometown is not _______________________________________(和过去的一样). (what)

15. My Chinese dictionary has disappeared. Who__________________( 可能拿走 ) it away? (can)

14. The poor young man is ready to accept _______________(他能得到的一切帮助. (what)

13. Helen is much kinder to her younger child than to others, _______________(这一点使其他的孩子不高兴). (which)