30.
http://i729.photobucket.com/albums/ww291/kaka1307/0045.jpg
ans: D
31.
http://i729.photobucket.com/albums/ww291/kaka1307/0046.jpg
ans: B
33.
http://i729.photobucket.com/albums/ww291/kaka1307/0048.jpg
ans: B
34.
http://i729.photobucket.com/albums/ww291/kaka1307/0049.jpg
ans: A
35.
http://i729.photobucket.com/albums/ww291/kaka1307/0050.jpg
ans: D
pls show clear steps.thanks