Question 69: Many plants and animal species are now on the                of extinction.

A. danger                      B. border                       C. margin                      D. verge

30: A. advise B. parent C. apply D. attract

29: A. suppose B. problem C. minute D. dinner

28: A. restaurant B. assistance C. usually D. compliment

27: A. reply B. appear C. protect D. order

26: A. counterpart B. communicate C. attention D. appropriate

25: A. singer B. future C. reply D. answer

24: A. copy B. remove C. notice D. cancel

23: A. reduction B. popular C. romantic D. financial

22: A. attitude B. partnership C. romantic D. actually